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%I #3 Oct 16 2015 07:33:30
%S 37,1359,1260442,943196037,883978450474,787253224440475
%N Number of (n+1)X(7+1) 0..2 arrays with each row and column divisible by 7, read as a base-3 number with top and left being the most significant digits.
%C Column 7 of A263373.
%e Some solutions for n=2
%e ..0..0..1..0..0..1..0..0....2..2..2..0..2..2..2..2....2..2..0..0..1..0..0..0
%e ..0..2..1..0..2..1..0..0....1..1..1..0..1..1..1..1....1..1..0..2..1..2..2..0
%e ..0..1..2..0..1..2..0..0....0..0..0..0..0..0..0..0....0..0..0..1..2..1..1..0
%Y Cf. A263373.
%K nonn
%O 1,1
%A _R. H. Hardin_, Oct 16 2015
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