Expansion of e.g.f. 1/(1 - x - x^2)^(x^2).

Terms

a(0) =1a(1) =0a(2) =0a(3) =6a(4) =36a(5) =160a(6) =1620a(7) =18648a(8) =220080a(9) =2924640a(10) =44775360a(11) =753207840a(12) =13836731040a(13) =276442882560