A326760 Number of permutations of length n whose powers all avoid the pattern 321.

1, 2, 5, 12, 28, 70, 161, 386, 932, 2226, 5254, 12748, 30228, 72192

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Amanda Burcroff and Colin Defant, Pattern-Avoiding Permutation Powers, arXiv:1907.09451 [math.CO], 2019.

Crossrefs

Cf. A326761, A326762, A326763.

Sequence in context: A291234 A346051 A362893 * A238828 A326761 A162036

Adjacent sequences: A326757 A326758 A326759 * A326761 A326762 A326763

Keyword

nonn,more

Author

Amanda Burcroff, Jul 23 2019

Status

approved