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%I #4 Mar 12 2017 14:28:25
%S 1,36,639,7742,85469,856710,8209582,75625580,677582140,5935472812,
%T 51063145445,432757594342,3621630322984,29983493956274,
%U 245931204265827,2000828493677966,16161824873357957,129718958313978310
%N Number of nX4 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.
%C Column 4 of A283634.
%H R. H. Hardin, <a href="/A283630/b283630.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 18*a(n-1) -78*a(n-2) -186*a(n-3) +1365*a(n-4) +234*a(n-5) -4523*a(n-6) +15594*a(n-7) +6057*a(n-8) -60614*a(n-9) +66588*a(n-10) +51762*a(n-11) -313536*a(n-12) +181776*a(n-13) +367095*a(n-14) -650452*a(n-15) +214245*a(n-16) +853410*a(n-17) -640177*a(n-18) -457782*a(n-19) +317076*a(n-20) +100568*a(n-21) -60480*a(n-22) -7680*a(n-23) +4096*a(n-24)
%e Some solutions for n=4
%e ..0..0..1..0. .1..1..1..1. .0..0..1..0. .1..1..1..1. .0..1..0..1
%e ..0..0..1..0. .1..0..0..0. .1..1..0..1. .1..0..0..0. .0..0..0..1
%e ..0..1..1..0. .1..0..1..0. .1..0..0..1. .0..0..0..1. .1..1..1..0
%e ..1..0..0..1. .1..0..1..0. .0..0..0..0. .1..0..1..0. .1..0..0..1
%Y Cf. A283634.
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 12 2017
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