%I #2 Mar 30 2012 18:37:04
%S 1,1,2,9,76,1015,18996,461160,13810056,492785919,20433145960,
%T 966019244498,51307359002780,3025299547565555,196128997903654830,
%U 13867432141912978212,1062114397213146583512,87606299906342573320663
%N Column 0 of triangle A132620.
%C Triangle T=A132620 is defined by: antidiagonal k of T = antidiagonal k-1 of T^k (after appending '1' for even k) for k>0, with T(n,n)=1 for n>=0.
%Y Cf. A132620 (triangle), A132622 (column 1).
%K nonn
%O 0,3
%A _Paul D. Hanna_, Aug 24 2007