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%I #2 Mar 30 2012 18:37:05
%S 1,2,9,42,270,1785,13657,108606,943677,8534290,82099523,819569205,
%T 8575756709,92782439316,1042810799150,12077608219410,144446181373140,
%U 1774918640030754,22425992057948620,290381947113460848
%N Column 1 of triangle A132845.
%F a(n) = A132844(2n+1,1) = A132844(2n+2,1).
%o (PARI)
%Y Cf. triangles: A132845, A132844; other columns: A132846, A132848, A132849.
%K nonn
%O 0,2
%A _Paul D. Hanna_, Sep 17 2007
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