A279297 Number of permutations of [n] having exactly eight (possibly overlapping) doubledescents.

1, 20, 4280, 127917, 6402984, 208910728, 7440888001, 237920318012, 7682498246390, 241437687882797, 7610900307811180, 239466123419848086, 7589962647890648579, 242520044163828141976, 7839783867491553405462, 256717246780820798056943, 8529320594216231644881865

Offset: 10

Author

Alois P. Heinz, Dec 09 2016

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 10..459

Crossrefs

Column k=8 of A162975.