Main diagonal of triangle A108990, in which the g.f. of row n, R_n(x), satisfies: [x^k] R_{n+1}(x) = [x^k] (1 + x*R_n(x))^(n+1) for k=0..n+1.
A108991
Main diagonal of triangle A108990, in which the g.f. of row n, R_n(x), satisfies: [x^k] R_{n+1}(x) = [x^k] (1 + x*R_n(x))^(n+1) for k=0..n+1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =22a(4) =287a(5) =5496a(6) =139727a(7) =4447234a(8) =170501039a(9) =7661336692a(10) =395314147319
External references
- oeis: A108991