OFFSET
0,4
COMMENTS
This sequence is obtained from the generalized Euler transform in A266964 by taking f(n) = 1/n, g(n) = -n^n.
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..387
FORMULA
a(0) = 1 and a(n) = (1/n) * Sum_{k=1..n} b(k)*a(n-k) where b(n) = Sum_{d|n} d^n*(-1)^(n/d).
PROG
(PARI) N=66; x='x+O('x^N); Vec(1/prod(k=1, N, (1+k^k*x^k)^(1/k)))
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Nov 16 2017
STATUS
approved