A124559 Derived from secondary diagonal of table A124550; a(n) = A124550(n+1,n)/(n+1).

1, 1, 5, 51, 869, 22202, 803053, 39901447, 2677520438, 239963727089, 28509710041427, 4469877880908109, 921904263806801157, 249426774472230102453, 88324099839785869552329

Offset

0,3

Comments

In table A124550, the g.f. of row n, R_n(y), simultaneously satisfies: R_n(y) = [ Sum_{k>=0} y^k * R_{n*k}(y) ]^n for n>=0.

Links

Table of n, a(n) for n=0..14.

Formula

a(n) = (n+1)*A124558(n).

Crossrefs

Cf. A124550 (table); A124557, A124558; A124551, A124552, A124554, A124555, A124556.

Sequence in context: A193444 A243242 A111340 * A368838 A348023 A172403

Adjacent sequences: A124556 A124557 A124558 * A124560 A124561 A124562

Keyword

nonn

Author

Paul D. Hanna, Nov 07 2006

Status

approved