Expansion of (Sum_{n=-inf..inf} x^(n^2))^(-18).

A004419

Expansion of (Sum_{n=-inf..inf} x^(n^2))^(-18).

Terms

    a(0) =1a(1) =-36a(2) =684a(3) =-9120a(4) =95724a(5) =-841320a(6) =6433248a(7) =-43918272a(8) =272670444a(9) =-1561033348a(10) =8329222584a(11) =-41772509280a(12) =198265106400a(13) =-895619289384

External references