Palindromes | Base-dependent integer sequences
A palindromic number (also known as a numeral palindrome or a numeric palindrome) is a number (such as 16461) that remains the same when its digits are reversed. In other words, it has reflectional symmetry across a vertical axis. The term palindromic is derived from palindrome, which refers to a word (such as rotor or racecar) whose spelling is unchanged when its letters are reversed. The first 30 palindromic numbers (in decimal) are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202, … (sequence in the OEIS). Palindromic numbers receive most attention in the realm of recreational mathematics. A typical problem asks for numbers that possess a certain property and are palindromic. For instance: * The palindromic primes are 2, 3, 5, 7, 11, 101, 131, 151, ... (sequence in the OEIS). * The palindromic square numbers are 0, 1, 4, 9, 121, 484, 676, 10201, 12321, ... (sequence in the OEIS). It is obvious that in any base there are infinitely many palindromic numbers, since in any base the infinite sequence of numbers written (in that base) as 101, 1001, 10001, 100001, etc. consists solely of palindromic numbers. (Wikipedia).
The Palindrome Numbers 111...121...111 Are Always Composite: 2022 AMC10B Problem 6
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From playlist Elementary Number Theory
Interesting Math Facts: Forty, One, and Palindrome Numbers
#shorts This video provides 3 interesting math facts. https://mathispower4u.com
From playlist Math Shorts
👉 Learn all about decimals. Decimals are numbers written with a decimal point. Digits can be written to the right or to the left of the decimal point. Digits are written to the left of the decimal point increase in value by multiples of 10 while digits written to the right decrease by mul
From playlist Decimals | Learn About
This number systems video tutorial explains how to convert from decimal to BCD or binary coded decimal. Subscribe: https://www.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA?sub_confirmation=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor https://www.facebook.com/Math
From playlist Number Systems
Visualizing decimal numbers and their arithmetic 67 | Arithmetic and Geometry Math Foundations
This video gives a precise definition of a decimal number as a special kind of rational number; one for which there is an expression a/b where a and b are integers, with b a power of ten. For such a number we can extend the Hindu-Arabic notation for integers by introducing the decimal form
From playlist Math Foundations
A Maths Puzzle: Find the nine digit number
Find a nine digit numbers, using the numbers 1 to 9, and using each number once without repeats, such that; the first digit is a number divisible by 1. The first two digits is a number divisible by 2; The first three digits is a number divisible by 3 and so on until we get a nine digit num
From playlist My Maths Videos
Ex: Determine a Number that is Less Than and Greater than Using a Specific Place Value
This video provides examples of how to find a number that is less than and greater than a given number using a specific place value. Search Video Library at http://www.mathispower4u.wordpress.com
From playlist Whole Numbers: Place Value and Writing Numbers
1,001 has some interesting properties and leads to some fun patterns
From playlist Number Patterns
"Put worded numbers into figures or vice versa."
From playlist Number: Basic Arithmetic
Srecko Brlek: Palindromes patterns
Abstract: The study of palindromes and their generalizations in a word has gained a lot of interest in the last 20 years, motivated by applications in physics, biology, discrete geometry, to name only a few. Using Sebastien Ferenczi as an example, we illustrate the computation of its palin
From playlist Dynamical Systems and Ordinary Differential Equations
C Program To Check A Number Is Palindrome Or Not | Palindrome Program In C | Simplilearn
This video is based on C Program To Check A Number Is Palindrome Or Not. Palindrome Program In C Tutorial will help beginners with a theoretical as well as a practical explanation of the program about the working and implementation of the Palindrome. ✅00:00- C Program To Check A Number I
From playlist C++ Tutorial Videos
Python Programming Practice: LeetCode #5 -- Longest Palindromic Substring
This episode of Python Programming Practice shows two approaches to LeetCode #5 -- Longest Palindromic Substring https://leetcode.com/problems/longest-palindromic-substring/ This is a medium difficulty problem. Note that the intent of this series to help viewers think through approaches
From playlist Python Programming Practice
Svetlana Puzynina: On k-abelian palindromes
Recording during the thematic meeting: "Combinatorics on words" the March 16, 2016 at the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathemati
From playlist Combinatorics
Suggest a problem: https://forms.gle/ea7Pw7HcKePGB4my5 Please Subscribe: https://www.youtube.com/michaelpennmath?sub_confirmation=1 Patreon: https://www.patreon.com/michaelpennmath Merch: https://teespring.com/stores/michael-penn-math Personal Website: http://www.michael-penn.net Randolp
From playlist Interesting Sums
#MegaFavNumbers A small discussion regarding a famous "proof" that all numbers are interesting. This video is my participation in the #MegaFavNumbers project.
From playlist MegaFavNumbers
Checking For Palindromes in Excel - Episode 2313
A recent news story reported that 02/02/2020 was the first time in 900 years that we had a palindrome as a date. While the news story left out a bunch of additional details, I was wondering if you could easily fact-check that in Excel. In today's episode a way to use Dynamic Arrays, SEQUEN
From playlist Array Formulas In Excel
Lecture 7 - Suffix Arrays and Assembly
This is Lecture 7 of the CSE549 (Computational Biology) course taught by Professor Steven Skiena [http://www.cs.sunysb.edu/~skiena/] at Stony Brook University in 2010. The lecture slides are available at: http://www.algorithm.cs.sunysb.edu/computationalbiology/pdf/lecture7.pdf More infor
From playlist CSE549 - Computational Biology - 2010 SBU
Here are this week's 5 Genuinely Approachable Sudoku (GAS) puzzles: GAS 186 – Kropkidrome by Clover: https://tinyurl.com/2p9y8ut7 Normal sudoku rules apply. The sequence of digits along a grey line forms a palindrome: that is, each grey line reads the same forwards as backwards. Digits o
From playlist All the GAS - Genuinely Approachable Sudokus
111111111x111111111 - Beauty of Mathematics
If you multiply a number with only 1s by itself, you end up with a palindrome of the numbers in ascending and then descending order. People have called this an example of the "beauty of mathematics." If your number has N digits of 1, then its square will be the numbers 1 to N in ascending
From playlist Viral Math Memes
The Chasm | Think Like A Coder, Ep 6
The adventure continues! Episode 6: Ethic, Hedge, and Octavia must find a way to cross the bottomless ravine to get to the tower. Can they make it before the guards return? -- This is episode 6 of our animated series “Think Like A Coder.” This 10-episode narrative follows a girl, Ethic
From playlist New TED-Ed Originals