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A256207 Number of permutations in S_n that avoid the pattern 53421. 0
1, 1, 2, 6, 24, 119, 694, 4582, 33325, 261853, 2191902, 19344408, 178582940, 1713999264 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

Zvezdelina Stankova-Frenkel and Julian West, A new class of Wilf-equivalent permutations, arXiv:math/0103152.

CROSSREFS

Representatives for the 16 Wilf-equivalence patterns of length 5 are given in A116485, A047889, and A256195-A256208.

Cf. A099952.

Sequence in context: A256206 A052397 A047889 * A256208 A264432 A094198

Adjacent sequences:  A256204 A256205 A256206 * A256208 A256209 A256210

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 19 2015

STATUS

approved

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Last modified August 18 08:57 EDT 2019. Contains 326077 sequences. (Running on oeis4.)