G.f. satisfies: A(x) = Sum_{n>=0} x^n * (3 + A(x)^n)^n.
A247331
G.f. satisfies: A(x) = Sum_{n>=0} x^n * (3 + A(x)^n)^n.
Terms
- a(0) =1a(1) =4a(2) =20a(3) =148a(4) =1492a(5) =18068a(6) =244628a(7) =3582612a(8) =55783252a(9) =913716116a(10) =15633525524a(11) =278068128660
External references
- oeis: A247331