# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a124552 Showing 1-1 of 1 %I A124552 #3 Mar 30 2012 18:37:01 %S A124552 1,2,7,30,159,1056,8812,92062,1200415,19512990,395379699,9991017068, %T A124552 315094522052,12413464676162,611490149713956,37699912801819870, %U A124552 2911578809929672737,281916836769424155940,34249052273023310929439 %N A124552 Row 2 of table A124550; also equals the self-convolution square of A124562, which is row 2 of table A124560. %C A124552 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. %F A124552 G.f.: A(x) = [ Sum_{k>=0} y^k * R_{2k}(y) ]^2, where R_n(x) is the g.f. of row n in table A124550. %Y A124552 Cf. A124550; other rows: A124551, A124553, A124554, A124555, A124556. %K A124552 nonn %O A124552 0,2 %A A124552 _Paul D. Hanna_, Nov 07 2006 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE