A279297 - OEIS

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A279297

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

2

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

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OFFSET

10,2

LINKS

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

CROSSREFS

Column k=8 of A162975.

Sequence in context: A332265 A177323 A184891 * A079759 A109894 A227765

Adjacent sequences: A279294 A279295 A279296 * A279298 A279299 A279300

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Dec 09 2016

STATUS

approved