OFFSET
0,3
COMMENTS
PROG
(PARI) {a(n)=local(N=(2^(n+1)+3+(-1)^n)/6, X=x+O(x^N)); polcoeff(1/((1-X)^2*prod(m=0, n-1, 1-X^(2^m))), N-1)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 22 2008
STATUS
approved