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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 (list; graph; refs; listen; history; text; internal format)
 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. LINKS 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: A020123 A186186 A135889 * A172450 A203508 A052757 Adjacent sequences:  A124559 A124560 A124561 * A124563 A124564 A124565 KEYWORD nonn AUTHOR Paul D. Hanna, Nov 07 2006 STATUS approved

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