G.f. satisfies: x = Sum_{n>=1} 1/A(x)^(5*n) * Product_{k=1..n} (1 - 1/A(x)^k).
A209441
G.f. satisfies: x = Sum_{n>=1} 1/A(x)^(5*n) * Product_{k=1..n} (1 - 1/A(x)^k).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =30a(4) =260a(5) =2463a(6) =24656a(7) =256493a(8) =2745149a(9) =30031677a(10) =334334789a(11) =3775539592a(12) =43145236171a(13) =498018527632
External references
- oeis: A209441