OFFSET
0,8
FORMULA
a(0) = 1; a(n) = -Sum_{k=1..n} A008578(k) * a(n-k).
MATHEMATICA
nmax = 50; CoefficientList[Series[1/(1 + x + Sum[Prime[k - 1] x^k, {k, 2, nmax}]), {x, 0, nmax}], x]
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Aug 04 2021
STATUS
approved