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A268748 Number of nX6 binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.

%I A268748 #4 Feb 12 2016 12:32:43
%S A268748 41,659,10830,165019,2425799,34732937,487682438,6746117783,
%T A268748 92215499119,1248437108837,16766958502992,223674635599161,
%U A268748 2966748789292217,39154974765661223,514529476985579624,6735601878829825279
%N A268748 Number of nX6 binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.
%C A268748 Column 6 of A268750.
%H A268748 R. H. Hardin, <a href="/A268748/b268748.txt">Table of n, a(n) for n = 1..210</a>
%F A268748 Empirical: a(n) = 16*a(n-1) +60*a(n-2) -1148*a(n-3) -3346*a(n-4) +16272*a(n-5) +36588*a(n-6) -104246*a(n-7) -147989*a(n-8) +349140*a(n-9) +217324*a(n-10) -591448*a(n-11) -19320*a(n-12) +431032*a(n-13) -151921*a(n-14) -73194*a(n-15) +41684*a(n-16) +2552*a(n-17) -3594*a(n-18) +148*a(n-19) +100*a(n-20) -4*a(n-21) -a(n-22)
%e A268748 Some solutions for n=4
%e A268748 ..0..0..1..1..0..0. .1..0..1..0..1..0. .0..0..0..1..0..1. .0..1..0..0..0..1
%e A268748 ..0..1..0..0..0..1. .0..0..0..1..0..0. .0..0..0..1..0..0. .0..0..1..0..1..0
%e A268748 ..0..0..1..0..1..0. .0..1..0..0..0..0. .1..0..0..0..0..0. .0..0..0..1..0..0
%e A268748 ..0..1..0..1..0..0. .0..1..0..0..0..1. .0..0..1..0..1..0. .1..0..1..0..0..1
%Y A268748 Cf. A268750.
%K A268748 nonn
%O A268748 1,1
%A A268748 _R. H. Hardin_, Feb 12 2016