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%I #3 Dec 14 2013 19:36:08
%S 1,3,9,40,264,2379,27568,392895,6663624,131211423,2943137604,
%T 74087543634,2068127523264,63395972293650,2116776180704988,
%U 76462961271015326,2970720383283042732,123517218432709179030,5472063213488927240290,257315864404023900340860,12799687840583182179921204
%N Third column of triangle A233530.
%Y Cf. A233530, A233531, A233532, A233534, A233535.
%K nonn
%O 1,2
%A _Paul D. Hanna_, Dec 14 2013