OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..100
MATHEMATICA
With[{m = 30}, CoefficientList[Series[Sum[(-1)^j*Log[1 -x -2^j*x^2]^j/j!, {j, 0, m+2}], {x, 0, m}], x]] (* G. C. Greubel, Mar 15 2021 *)
PROG
(PARI) {a(n)=polcoeff(sum(i=0, n, (-1)^i*log(1-x-2^i*x^2 +x*O(x^n))^i/i!), n)}
(Magma)
m:=30; R<x>:=PowerSeriesRing(Rationals(), m);
Coefficients(R!( (&+[(-1)^j*Log(1-x-2^j*x^2)^j/Factorial(j) : j in [0..m+2]]) )); // G. C. Greubel, Mar 15 2021
(Sage)
def A136508_list(prec):
P.<x> = PowerSeriesRing(QQ, prec)
return P( sum((-1)^j*log(1-x -2^j*x^2)^j/factorial(j) for j in (0..32)) ).list()
A136508_list(30) # G. C. Greubel, Mar 15 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jan 01 2008
STATUS
approved