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Number of (n+1)X(4+1) 0..2 arrays with every element both >= and <= some horizontal, vertical or antidiagonal neighbor
1

%I #4 Nov 20 2013 18:53:19

%S 4483,745157,108997581,16237318767,2425888162725,362285582855051,

%T 54098452658673021,8078379401440126991,1206326901993417809943,

%U 180138093804741886040287,26899615671950715433420665

%N Number of (n+1)X(4+1) 0..2 arrays with every element both >= and <= some horizontal, vertical or antidiagonal neighbor

%C Column 4 of A232204

%H R. H. Hardin, <a href="/A232200/b232200.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 20 2013