A279295 Number of permutations of [n] having exactly six (possibly overlapping) doubledescents.

1, 16, 1138, 25999, 775195, 18523314, 463088628, 11068300437, 268537592975, 6514804501312, 160541447975710, 4013204668037233, 102267326625073183, 2658365720541599806, 70614284743773530148, 1917874812704472161265, 53294689741358893762638

Offset

8,2

Links

Alois P. Heinz, Table of n, a(n) for n = 8..460

Crossrefs

Column k=6 of A162975.

Sequence in context: A265622 A144915 A209541 * A353029 A053903 A254333

Adjacent sequences: A279292 A279293 A279294 * A279296 A279297 A279298

Keyword

nonn

Author

Alois P. Heinz, Dec 09 2016

Status

approved