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%I #4 Oct 26 2015 13:32:43
%S 2,2,7,7,61,616,62904,20141827
%N Number of (n+1)X(n+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits, and rows and columns lexicographically nonincreasing
%C Diagonal of A263799
%e Some solutions for n=5
%e ..1..1..1..1..0..0....1..1..1..1..0..0....1..1..1..1..0..0....1..1..1..1..0..0
%e ..1..1..1..1..0..0....1..1..0..0..1..1....1..1..1..1..0..0....1..1..1..1..0..0
%e ..1..1..0..0..1..1....1..0..1..0..1..0....0..0..0..0..1..1....1..1..0..0..0..0
%e ..1..1..0..0..1..1....1..0..0..1..0..0....0..0..0..0..1..1....1..1..0..0..0..0
%e ..0..0..0..0..1..1....0..0..1..0..0..1....0..0..0..0..1..1....1..0..1..0..1..0
%e ..0..0..0..0..1..1....0..0..0..0..0..0....0..0..0..0..1..1....1..0..1..0..1..0
%Y Cf. A263799
%K nonn
%O 1,1
%A _R. H. Hardin_, Oct 26 2015
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