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Number of nX5 0..4 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor
1

%I #5 Mar 31 2012 12:36:55

%S 325,904175,1508941377,2202928769005,3326678666649639,

%T 5067952959051283059,7699282272868336554723,

%U 11691435324507478903609409,17757482537353874208791692831,26971137476119655323173537171423

%N Number of nX5 0..4 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

%C Column 5 of A203191

%H R. H. Hardin, <a href="/A203188/b203188.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 30 2011