Expansion of e.g.f. exp(x * (1 + x^2)^3).

Terms

a(0) =1a(1) =1a(2) =1a(3) =19a(4) =73a(5) =541a(6) =5761a(7) =35911a(8) =515089a(9) =5399353a(10) =61253281a(11) =991270171a(12) =11862564121a(13) =203249068309