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Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal, vertical, diagonal or antidiagonal neighbor
1

%I #5 Aug 11 2014 22:45:56

%S 1461,111607,6753291,426813751,27382170933,1753672323629,

%T 112198453386465,7178913247853751,459367231584591507,

%U 29394095101817393631,1880867639785229395915,120352854144851883802499

%N Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal, vertical, diagonal or antidiagonal neighbor

%C Column 3 of A232352

%H R. H. Hardin, <a href="/A232347/b232347.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A232347/a232347.txt">Empirical recurrence of order 80</a>

%F Empirical recurrence of order 80 (see link above)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 22 2013