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A203190 Number of nX7 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 3985,271942421,9045835238617,257892549401944763,

%T 7699282272868336554723,232103745979086439437076471,

%U 6970324759861265041580630860421,209209746691129348723930919203856597

%N Number of nX7 0..4 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

%C Column 7 of A203191

%H R. H. Hardin, <a href="/A203190/b203190.txt">Table of n, a(n) for n = 1..12</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 30 2011

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)