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%I #11 Jun 09 2018 18:58:03
%S 102,31,22,27,35,48,69,103,158,247,391,624,1001,1611,2598,4195,6779,
%T 10960,17725,28671,46382,75039,121407,196432,317825,514243,832054,
%U 1346283,2178323,3524592,5702901,9227479,14930366,24157831,39088183
%N Number of (n+2) X 5 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order.
%C Column 3 of A204754.
%H R. H. Hardin, <a href="/A204749/b204749.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 2*a(n-1) - a(n-3) for n > 5.
%F Empirical g.f.: x*(102 - 173*x - 40*x^2 + 85*x^3 + 12*x^4) / ((1 - x)*(1 - x - x^2)). - _Colin Barker_, Jun 09 2018
%e Some solutions for n=3:
%e 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 0 0 1 1 1
%e 0 0 0 0 0 1 0 0 0 1 1 1 1 0 0 0 0 0 1 1
%e 1 1 1 1 1 1 1 0 0 0 1 1 0 0 0 1 0 0 0 1
%e 1 1 1 1 1 1 1 1 0 0 1 0 0 0 1 1 1 0 0 0
%e 0 0 0 0 0 0 1 1 1 0 0 0 0 1 1 1 1 1 0 0
%Y Cf. A204754.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 18 2012