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A203273 Number of nX4 0..5 arrays with every nonzero element less than or equal to some NW, E or S neighbor 1

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

%S 1,12783,7849844,2590250609,805342647391,273475278673606,

%T 94164551870236956,31840186365984384473,10732714375394439304495,

%U 3631600847251315774005507,1229751760436754809100391393

%N Number of nX4 0..5 arrays with every nonzero element less than or equal to some NW, E or S neighbor

%C Column 4 of A203277

%H R. H. Hardin, <a href="/A203273/b203273.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Dec 31 2011

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)