A035296 - OEIS

%I #3 Mar 30 2012 16:47:33

%S 1,1,2,4,7,12,18,28,41,60,85,119,164,225,304,408,542,716,938,1222,

%T 1582,2037,2609,3326,4220,5332,6708,8407,10497,13061,16197,20020,

%U 24671,30313,37141,45383,55311,67242

%N Expansion of sum ( q^n / product( 1-q^k, k=1..4*n), n=0..inf ).

%K nonn

%O 0,3

%A _N. J. A. Sloane_.