A203334 - OEIS

%I #5 Mar 31 2012 12:36:56

%S 1,161,27056,2224079,156011082,12492984999,1066362412766,

%T 89890925664626,7505491171476277,629157090925887686,

%U 52957694264102993755,4460957940319875997958,375762142634174553990100

%N Number of nX4 0..5 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors

%C Column 4 of A203338

%H R. H. Hardin, <a href="/A203334/b203334.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..2..3..3..3....0..2..4..4....4..4..1..0....3..3..0..0....0..4..4..0

%e ..2..3..3..3....4..5..5..4....4..4..2..1....3..3..4..4....3..4..4..4

%e ..1..0..2..2....4..5..5..4....3..0..3..3....4..4..4..4....4..4..1..4

%e ..1..1..1..0....0..0..3..3....3..3..3..3....4..4..1..1....4..4..4..4

%K nonn

%O 1,2

%A _R. H. Hardin_ Dec 31 2011