%I #4 Oct 03 2015 16:12:03
%S 6,6,12,318,900,4536,34782,178926,1042284,6538206,38160540,227814120,
%T 1377960126,8227422006,49321272972,296370593598,1776644188020,
%U 10658199015576,63967089528222,383739633130686,2302372435469484
%N Number of (1+2)X(n+2) 0..1 arrays with each row divisible by 7 and column not divisible by 7, read as a binary number with top and left being the most significant bits.
%C Row 1 of A262849.
%H R. H. Hardin, <a href="/A262850/b262850.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 6*a(n-1) +72*a(n-3) -432*a(n-4) -1270*a(n-6) +7620*a(n-7) -2880*a(n-9) +17280*a(n-10) +113591*a(n-12) -681546*a(n-13) +115128*a(n-15) -690768*a(n-16)
%e Some solutions for n=4
%e ..1..0..1..0..1..0....1..1..1..0..0..0....1..0..1..0..1..0....0..1..0..1..0..1
%e ..0..0..0..0..0..0....0..0..0..0..0..0....0..1..0..1..0..1....0..0..0..0..0..0
%e ..1..1..1..1..1..1....0..0..0..1..1..1....0..1..1..1..0..0....1..1..1..1..1..1
%Y Cf. A262849.
%K nonn
%O 1,1
%A _R. H. Hardin_, Oct 03 2015
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