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A203549 Number of nX7 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor 1

%I #5 Mar 31 2012 12:36:57

%S 1,5448482,158110806032,1791660443900385,18555799450636433964,

%T 218138773893328980719919,2637221656906543119366072476,

%U 31262034046818587403571213590974,368265394744290722981036142149330527

%N Number of nX7 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor

%C Column 7 of A203550

%H R. H. Hardin, <a href="/A203549/b203549.txt">Table of n, a(n) for n = 1..37</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 02 2012

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)