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A205473 Number of (n+1)X7 0..2 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..2 introduced in row major order.

%I A205473 #7 Jul 22 2025 18:55:05
%S A205473 11143,405702,15614579,637115198,26272023365,1094476686239,
%T A205473 45724154665434,1914758450334723,80250258826348339,
%U A205473 3365536894872561413,141181596884768969546,5923561349136374628421,248557182283520215199720
%N A205473 Number of (n+1)X7 0..2 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..2 introduced in row major order.
%C A205473 Column 6 of A205475
%H A205473 R. H. Hardin, <a href="/A205473/b205473.txt">Table of n, a(n) for n = 1..178</a>
%e A205473 Some solutions for n=4
%e A205473 ..0..0..0..1..2..1..2....0..0..0..0..0..0..0....0..0..0..0..0..0..0
%e A205473 ..1..0..1..1..1..1..1....0..1..1..0..1..1..0....0..1..0..1..0..2..2
%e A205473 ..1..0..1..2..1..0..1....0..0..0..0..0..0..0....0..1..0..0..0..2..0
%e A205473 ..0..0..1..1..1..0..1....1..0..1..0..1..1..0....0..1..0..1..0..2..2
%e A205473 ..1..1..1..2..1..0..0....0..0..0..0..0..0..0....1..1..1..1..0..2..0
%K A205473 nonn
%O A205473 1,1
%A A205473 _R. H. Hardin_ Jan 27 2012