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%I #4 Oct 10 2015 07:06:15
%S 168,1664,10356,56288,238104,1294448,6844676,35274768,166684808,
%T 837700064,4262833076,21682367296,106913755512,530662478800,
%U 2665248077636,13441453266928,67154044231144,333650046421056
%N Number of (n+3)X(3+3) 0..1 arrays with each row divisible by 15 and column not divisible by 15, read as a binary number with top and left being the most significant bits.
%C Column 3 of A263124.
%H R. H. Hardin, <a href="/A263121/b263121.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..0..1..1..0..1....0..0..1..1..1..1....1..1..1..1..0..0....1..1..1..1..0..0
%e ..1..0..1..1..0..1....0..0..0..0..0..0....0..0..0..0..0..0....0..0..1..1..1..1
%e ..1..1..1..1..0..0....0..0..1..1..1..1....0..0..1..1..1..1....1..0..1..1..0..1
%e ..0..0..1..1..1..1....0..1..1..1..1..0....1..1..1..1..0..0....0..0..1..1..1..1
%e ..1..0..1..1..0..1....0..0..1..1..1..1....1..1..1..1..0..0....1..1..1..1..0..0
%e ..0..0..0..0..0..0....1..0..1..1..0..1....0..1..1..1..1..0....0..1..1..1..1..0
%e ..0..1..1..1..1..0....1..0..1..1..0..1....1..1..1..1..0..0....0..0..1..1..1..1
%Y Cf. A263124.
%K nonn
%O 1,1
%A _R. H. Hardin_, Oct 10 2015