Expansion of e.g.f. exp( Sum_{n>=1} x^(n^2) ).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =25a(5) =121a(6) =361a(7) =841a(8) =21841a(9) =547345a(10) =4541041a(11) =23292721a(12) =169658281a(13) =7550279881a(14) =95230199065a(15) =692107448761