OFFSET
0,2
COMMENTS
PROG
(PARI) {a(n)=local(C_q=if(n==0, 1, prod(j=n+3, 2*n+2, 1-q^j)/prod(j=1, n, 1-q^j))); sum(i=0, (n+2)*n, polcoeff(C_q, i)^2)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 12 2006
STATUS
approved