A278027 Number of 1324-avoiding permutations of length n with a non-intersecting boundary of type (t, 3), for some integer t >= 1.

0, 0, 0, 1, 1, 7, 33, 139, 566, 2279, 9132, 36488, 145500, 579318

Offset

0,6

Links

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

C. Bean, M. Tannock and H. Ulfarsson, Pattern avoiding permutations and independent sets in graphs, arXiv:1512.08155 [math.CO], 2015. See Prop. 5.20.

Crossrefs

Sequence in context: A262600 A034577 A141291 * A225895 A089106 A211829

Adjacent sequences: A278024 A278025 A278026 * A278028 A278029 A278030

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 09 2016

Status

approved