A279202 Number of Wilf-equivalence classes of square permutations of 2n things that avoid 132.

1, 2, 11, 84, 743, 7108

Offset

0,2

Links

Table of n, a(n) for n=0..5.

Samuele Giraudo, S. Vialette, Unshuffling Permutations, arXiv preprint arXiv:1601.05962 [cs.DS], 2016.

Crossrefs

Sequence in context: A143140 A191805 A363563 * A086406 A158098 A104185

Adjacent sequences: A279199 A279200 A279201 * A279203 A279204 A279205

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 15 2016

Status

approved