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%I #3 Mar 30 2012 18:37:03
%S 1,1,3,37,1159,66953,6158021,825889193,152147002939,36866098462221,
%T 11368538145120143,4347671960639941039,2019396728684584627337,
%U 1119792551093682455434255,730724550040451849614251167
%N Sum of squared coefficients of q in the q-analog of the odd double factorials.
%o (PARI) {a(n)=if(n==0,1,sum(k=0,n^2,polcoeff(prod(j=1,n,(1-q^(2*j-1))/(1-q)),k,q)^2))}
%Y Cf. A001147 ((2n-1)!!); A128080 (triangle), A128081 (central terms), A128082 (diagonal); A127728, A128087.
%K nonn
%O 0,3
%A _Paul D. Hanna_, Feb 14 2007
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