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%I #5 Mar 12 2017 14:27:31
%S 0,0,37,388,3729,28828,203025,1325980,8216341,48912768,282293033,
%T 1589466368,8771503165,47606031352,254776347029,1347286728096,
%U 7051427209337,36575153581764,188217385278837,961810924181084
%N Number of nX3 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 3 of A283634.
%H R. H. Hardin, <a href="/A283629/b283629.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 15*a(n-1) -78*a(n-2) +134*a(n-3) +162*a(n-4) -840*a(n-5) +728*a(n-6) +1398*a(n-7) -3117*a(n-8) +413*a(n-9) +4626*a(n-10) -4056*a(n-11) -2576*a(n-12) +5376*a(n-13) -768*a(n-14) -3200*a(n-15) +1536*a(n-16) +768*a(n-17) -512*a(n-18)
%e Some solutions for n=4
%e ..1..1..1. .0..1..0. .0..1..0. .0..1..1. .1..1..1. .0..0..0. .0..1..0
%e ..1..0..0. .0..1..1. .1..1..0. .0..0..1. .0..0..1. .1..0..0. .1..0..0
%e ..0..0..0. .0..0..1. .0..1..0. .1..0..1. .1..0..0. .0..1..0. .1..1..1
%e ..1..1..1. .1..0..0. .1..0..0. .1..1..0. .1..1..0. .0..1..1. .0..0..0
%Y Cf. A283634.
%K nonn
%O 1,3
%A _R. H. Hardin_, Mar 12 2017
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