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%I #6 Feb 22 2020 20:54:24
%S 21,882,1724,9940,67169,461894,3162172,21906411,152100304,1053377463,
%T 7321279936,50893161901,353396805989,2456759583794,17078402117279,
%U 118676436051497,824965798194515,5734649466128312,39857755473341719
%N Number of nX7 0..1 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order
%C Column 7 of A204197
%H R. H. Hardin, <a href="/A204196/b204196.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..0..0..1..1....0..0..1..1..0..1..1....0..0..1..1..0..0..1
%e ..0..1..0..1..1..0..0....1..1..0..0..1..1..0....1..1..0..0..1..1..0
%e ..1..0..1..1..0..0..1....1..0..1..1..0..0..1....0..0..1..1..0..0..1
%e ..0..1..1..0..0..1..1....0..1..1..0..1..1..0....1..1..0..0..1..1..0
%e ..1..0..0..1..1..0..0....1..0..0..1..0..0..1....0..0..1..1..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 12 2012
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