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%I #3 Sep 23 2015 08:47:27
%S 69,281,3153,52961,2614661,24095961,589377041,21554653569
%N Number of (n+3)X(7+3) 0..1 arrays with each row and column divisible by 15, read as a binary number with top and left being the most significant bits.
%C Column 7 of A262457.
%e Some solutions for n=4
%e ..0..0..1..0..0..1..0..1..1..0....0..0..0..1..0..0..1..0..1..1
%e ..0..1..1..1..0..0..0..0..1..0....0..0..0..1..0..0..1..0..1..1
%e ..0..0..1..1..0..1..0..0..1..0....0..0..0..0..0..0..1..1..1..1
%e ..1..1..1..1..0..1..1..1..1..0....1..1..1..1..0..0..1..1..1..1
%e ..1..1..0..1..0..0..1..0..0..0....1..1..1..0..0..0..0..1..0..0
%e ..1..0..0..0..0..1..1..1..0..0....1..1..1..0..0..0..0..1..0..0
%e ..1..1..0..0..0..0..1..1..0..0....1..1..1..1..0..0..0..0..0..0
%Y Cf. A262457.
%K nonn
%O 1,1
%A _R. H. Hardin_, Sep 23 2015