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%I #4 Feb 21 2016 08:56:56
%S 5832,9211608,9230973192,7934992835112,6310088238337128,
%T 4786284820998999528,3516906597130333936872,2525822328725627338344168,
%U 1783069155917082001205203176,1241926797984458949166277812968
%N Number of nX7 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.
%C Column 7 of A269276.
%H R. H. Hardin, <a href="/A269275/b269275.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 1384*a(n-1) -566002*a(n-2) +61993580*a(n-3) -3083170217*a(n-4) +82564587476*a(n-5) -1288497445564*a(n-6) +12048887832352*a(n-7) -66380108132464*a(n-8) +198314583195456*a(n-9) -247475435747904*a(n-10) for n>11
%e Some solutions for n=2
%e ..0..0..0..1..3..1..2. .0..0..1..0..0..1..1. .0..0..0..0..0..1..2
%e ..2..0..0..1..3..2..2. .0..0..1..0..1..1..2. .0..0..2..2..0..0..0
%Y Cf. A269276.
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 21 2016
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