G.f. A(x) satisfies: 1 = Sum_{n>=0} 4^n * ((1+x)^n - A(x))^n.

A326284

G.f. A(x) satisfies: 1 = Sum_{n>=0} 4^n * ((1+x)^n - A(x))^n.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =104a(4) =4196a(5) =225216a(6) =14845072a(7) =1151255440a(8) =102289538128

External references