Permutation patterns | Enumerative combinatorics

Enumerations of specific permutation classes

In the study of permutation patterns, there has been considerable interest in enumerating specific permutation classes, especially those with relatively few basis elements. This area of study has turned up unexpected instances of Wilf equivalence, where two seemingly-unrelated permutation classes have the same numbers of permutations of each length. (Wikipedia).

Enumerations of specific permutation classes
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Related pages

European Journal of Combinatorics | Fibonacci number | Layered permutation | Permutation class | Permutation pattern | Journal of Symbolic Computation | Erdős–Szekeres theorem | Discrete Mathematics (journal) | Gilbreath shuffle | Electronic Journal of Combinatorics | Algebraic differential equation | Vexillary permutation | Holonomic function | Schröder number | Australasian Journal of Combinatorics | Wilf equivalence | Baxter permutation | On-Line Encyclopedia of Integer Sequences | Separable permutation | Stack-sortable permutation | Discrete Mathematics & Theoretical Computer Science | Generating function | Skew-merged permutation | Riffle shuffle permutation