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A266933 Number of nX6 binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

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%I A266933 #3 Jan 06 2016 11:30:53
%S A266933 2,6,19,82,429,2577,15850,96503,555060,2977370,14782970,68041108,
%T A266933 291292442,1165800099,4383605127,15564591521,52423001756,168200350788,
%U A266933 516045791503,1519124991181
%N A266933 Number of nX6 binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.
%C A266933 Column 6 of A266935.
%e A266933 Some solutions for n=4
%e A266933 ..0..0..0..0..0..0....0..0..0..0..1..1....0..0..0..0..0..1....0..0..0..0..0..0
%e A266933 ..0..0..0..0..0..1....1..1..1..1..0..0....0..0..0..1..1..0....0..0..1..1..1..1
%e A266933 ..0..0..0..0..1..0....1..1..1..1..0..0....1..1..1..0..0..0....1..1..0..0..1..1
%e A266933 ..1..1..1..1..0..0....1..1..1..1..1..1....1..1..1..0..0..0....1..1..1..1..0..0
%Y A266933 Cf. A266935.
%K A266933 nonn
%O A266933 1,1
%A A266933 _R. H. Hardin_, Jan 06 2016

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