Central coefficients of q in the q-analog of the odd double factorials: a(n) = [q^(n(n-1)/2)] Product_{j=1..n} (1-q^(2j-1))/(1-q).

A128081

Central coefficients of q in the q-analog of the odd double factorials: a(n) = [q^(n(n-1)/2)] Product_{j=1..n} (1-q^(2j-1))/(1-q).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =15a(5) =97a(6) =815a(7) =8447a(8) =104099a(9) =1487477a(10) =24188525a(11) =441170745a(12) =8920418105a(13) =198066401671

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