A303673 a(n) = [x^n] (15! / Sum_{k=0..n} (k+15)!*x^k)^(1/8).

1, -2, -16, -204, -3264, -60384, -1239912, -27591408, -655324704, -16443029408, -432731364992, -11882079044992, -339084517212576, -10026995732141760, -306530743192692480, -9669854410016300160, -314315622535266332160

Offset

0,2

Links

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

Maple

[seq(coeff(series((factorial(15)/add(factorial(k+15)*x^k, k=0..n))^(1/8), x, 30), x, n), n=0..25)]; # Muniru A Asiru, Apr 29 2018

Prog

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

Crossrefs

Cf. A077607, A303671, A303672.

Sequence in context: A300456 A370326 A036081 * A367425 A380262 A380801

Adjacent sequences: A303670 A303671 A303672 * A303674 A303675 A303676

Keyword

sign

Author

Seiichi Manyama, Apr 28 2018

Status

approved