G.f. A(x) satisfies: x = Sum_{n=-oo..+oo} (-x)^(n^2) * A(x)^((n-1)^2).

A355872

G.f. A(x) satisfies: x = Sum_{n=-oo..+oo} (-x)^(n^2) * A(x)^((n-1)^2).

Terms

    a(0) =2a(1) =14a(2) =434a(3) =17662a(4) =829314a(5) =42293582a(6) =2276970482a(7) =127359871870

External references