G.f.: Sum_{n>=1} Pell(n^2)*x^(n^2).

Terms

a(0) =1a(1) =0a(2) =0a(3) =12a(4) =0a(5) =0a(6) =0a(7) =0a(8) =985a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =470832a(16) =0a(17) =0a(18) =0a(19) =0a(20) =0a(21) =0a(22) =0a(23) =0a(24) =1311738121a(25) =0a(26) =0a(27) =0a(28) =0a(29) =0