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A186957 1/729 the number of (n+2)X6 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace 1

%I

%S 19881,3277141,373049827,47796308777,6014794685157,760608010557461,

%T 96133158385481199,12152638841787524045,1536155109102267515515,

%U 194180664943334156035447,24545745720495840084573061

%N 1/729 the number of (n+2)X6 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

%C Column 4 of A186962

%H R. H. Hardin, <a href="/A186957/b186957.txt">Table of n, a(n) for n = 1..140</a>

%e Some solutions for 4X6

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 01 2011

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Last modified August 13 11:30 EDT 2022. Contains 356091 sequences. (Running on oeis4.)