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A128323 Column 2 of triangle A128320. 4

%I

%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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Last modified September 25 22:29 EDT 2020. Contains 337346 sequences. (Running on oeis4.)