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%I #3 Mar 30 2012 18:37:03
%S 1,5,12,73,418,3110,23920,207549,1885166,18417710,187881112,
%T 2018628090,22533601892,261966343388,3149344100224,39158513865053,
%U 501507474201750,6611648592425790,89492095211184360,1242626064512513070
%N Column 2 of triangle A128320.
%o (PARI)
%Y Cf. A128320 (triangle), A128321 (column 0), A128322 (column 1), A128324 (row sums); variant: A115083.
%K nonn
%O 0,2
%A _Paul D. Hanna_, Feb 25 2007
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