E.g.f. satisfies A(x) = exp(x * A(x)^(x^2)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =25a(5) =121a(6) =361a(7) =8401a(8) =82321a(9) =456625a(10) =11496241a(11) =172149121a(12) =1452983401a(13) =40947003241a(14) =823437038425