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

Author

Seiichi Manyama, Apr 28 2018

Keywords

• sign

Links

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

Crossrefs

Cf. A077607, A303671, A303672.

Programs

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

PARI

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