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A186137 Number of (n+1) X 6 0..2 arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace. 1

%I #8 Jun 23 2022 14:42:52

%S 187704,21216780,2513594016,296649133848,35143110551556,

%T 4163686846399494,493359058239095898,58456633907530057662,

%U 6926519345320270001520,820714863561408296836038,97245970628884382202256854

%N Number of (n+1) X 6 0..2 arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.

%C Column 5 of A186141.

%H R. H. Hardin, <a href="/A186137/b186137.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3 X 6

%e ..0..0..1..2..2..2....0..0..0..0..1..0....0..0..1..1..2..2....0..0..2..1..1..1

%e ..0..1..0..2..2..0....0..1..0..1..0..0....0..1..2..2..0..0....0..0..1..1..1..0

%e ..0..0..2..0..0..1....0..2..0..2..2..0....0..0..0..0..2..0....0..1..0..1..0..1

%Y Cf. A186141.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 13 2011

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)