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Column 0 of triangle A132620.
2

%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