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%I #5 Mar 09 2017 18:23:59
%S 0,0,1,5,28,145,703,3288,14980,66958,294864,1283142,5529698,23637592,
%T 100350059,423511851,1778210188,7432635711,30943479193,128365649488,
%U 530810149910,2188638842860,9000532494016,36925016172060,151153394192532
%N Number of nX2 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
%C Column 2 of A283522.
%H R. H. Hardin, <a href="/A283516/b283516.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 9*a(n-1) -18*a(n-2) -24*a(n-3) +39*a(n-4) +75*a(n-5) +69*a(n-6) +93*a(n-7) +99*a(n-8) +67*a(n-9) +45*a(n-10) +33*a(n-11) +16*a(n-12) +6*a(n-13) +3*a(n-14) +a(n-15)
%e All solutions for n=4
%e ..0..0. .0..1. .1..1. .1..0. .1..1
%e ..1..1. .1..1. .1..1. .1..1. .1..1
%e ..1..1. .1..1. .1..1. .1..1. .1..1
%e ..1..1. .1..0. .0..1. .1..1. .0..0
%Y Cf. A283522.
%K nonn
%O 1,4
%A _R. H. Hardin_, Mar 09 2017
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