OFFSET
0,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..421
FORMULA
a(n) = 30^n/n! * Product_{k=0..n-1} (8*k - 1) for n > 0.
a(n) = 15^n * A301271(n).
a(n) ~ -2^(4*n - 3) * 15^n / (Gamma(7/8) * n^(9/8)). - Vaclav Kotesovec, Jun 16 2018
D-finite with recurrence: n*a(n) +30*(-8*n+9)*a(n-1)=0. - R. J. Mathar, Jan 20 2020
MATHEMATICA
CoefficientList[Series[Surd[1-240x, 8], {x, 0, 20}], x] (* Harvey P. Dale, Aug 29 2024 *)
PROG
(PARI) N=20; x='x+O('x^N); Vec((1-240*x)^(1/8))
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Jun 15 2018
STATUS
approved