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%I #3 Dec 29 2015 19:55:27
%S 2,8,39,261,2090,18808,175180,1595005,13720886,109830369,814603355,
%T 5605474331,35922351069,215377645103,1213816837380,6458765687442,
%U 32580784869691,156385330035183,716642920656832
%N Number of nX6 binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing.
%C Column 6 of A266470.
%e Some solutions for n=4
%e ..0..0..0..0..0..1....0..0..0..1..1..1....0..0..0..0..0..1....0..1..1..1..1..1
%e ..0..0..0..0..1..0....1..1..1..0..0..0....0..0..1..1..1..0....1..0..0..1..1..1
%e ..1..1..1..1..0..0....1..1..1..0..0..0....1..1..0..0..0..0....1..0..1..0..0..0
%e ..1..1..1..1..1..1....1..1..1..0..0..0....1..1..1..1..1..0....1..1..0..0..0..0
%Y Cf. A266470.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 29 2015
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