G.f.: A(x) = 1 + x/2 * Sum_{n>=0} A(x)^(n^2) / 2^n.

A302106

G.f.: A(x) = 1 + x/2 * Sum_{n>=0} A(x)^(n^2) / 2^n.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =45a(4) =1095a(5) =35151a(6) =1381725a(7) =64175631a(8) =3451040205a(9) =211905683649

External references