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A124562
Row 2 of table A124560; also, the self-convolution square equals A124552, which is row 2 of table A124550.
6
1, 1, 3, 12, 63, 429, 3716, 40272, 541655, 9022405, 186233087, 4771577072, 152050410552, 6037181967007, 299176055730253, 18530408350215038, 1436276193993882859, 139462485162718679221, 16980510121067921518710
OFFSET
0,3
COMMENTS
In table A124560, the g.f. of row n, R_n(y), simultaneously satisfies: R_n(y) = Sum_{k>=0} y^k * [R_{n*k}(y)]^(n*k) for n>=0.
FORMULA
G.f.: A(x) = Sum_{k>=0} y^k * [R_{2k}(y)]^(2k), where R_n(x) is the g.f. of row n in table A124560.
CROSSREFS
Cf. A124560 (table); other rows: A124551, A124563, A124564, A124565, A124566.
Sequence in context: A351778 A135889 A369746 * A172450 A276743 A203508
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Nov 07 2006
STATUS
approved