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%I #4 Mar 07 2016 08:53:04
%S 756,2005080,2801265390,3263186052840,3482459146452300,
%T 3529041005211929340,3455975332370347120110,3303146124421034482402560,
%U 3100239092232761916959997090,2869073024662771484873107165380
%N Number of nX4 0..6 arrays with some element plus some horizontally or vertically adjacent neighbor totalling six exactly once.
%C Column 4 of A269902.
%H R. H. Hardin, <a href="/A269898/b269898.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 1746*a(n-1) -838311*a(n-2) +67282834*a(n-3) -2128326885*a(n-4) +29556635268*a(n-5) -150523824676*a(n-6) for n>7
%e Some solutions for n=1
%e ..4..5..1..0. .0..0..0..6. .3..3..5..6. .2..3..3..6. .0..2..3..3
%Y Cf. A269902.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 07 2016
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