A303616 a(n) = [x^n] (1/15! * Sum_{k=0..n} (k+15)!*x^k)^(1/8).

1, 2, 20, 276, 4544, 84496, 1723960, 37906608, 887437120, 21930970336, 568496401152, 15384167213056, 433012038646112, 12640210696664768, 381804410640552576, 11911194405763099520, 383211218811649633792, 12698182733530048241152

Offset

0,2

Links

Seiichi Manyama, Table of n, a(n) for n = 0..439

Prog

(PARI) N=66; x='x+O('x^N); Vec((1/15!*sum(k=0, N, (k+15)!*x^k))^(1/8))

Crossrefs

Cf. A303613, A303614.

Sequence in context: A229727 A325409 A155671 * A231499 A217364 A365771

Adjacent sequences: A303613 A303614 A303615 * A303617 A303618 A303619

Keyword

nonn

Author

Seiichi Manyama, Apr 27 2018

Status

approved