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A203457 Number of nX5 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 1

%I

%S 1,63,3748,143936,5660631,231588325,9441977403,385259518988,

%T 15769361994812,645761085331412,26436118387761701,1082201755675241681,

%U 44303475359100889481,1813730483493212443443,74252023311120691422496

%N Number of nX5 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors

%C Column 5 of A203460

%H R. H. Hardin, <a href="/A203457/b203457.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 02 2012

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Last modified October 26 08:00 EDT 2021. Contains 348267 sequences. (Running on oeis4.)