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A124559
Derived from secondary diagonal of table A124550; a(n) = A124550(n+1,n)/(n+1).
3
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.
FORMULA
a(n) = (n+1)*A124558(n).
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Nov 07 2006
STATUS
approved