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A203344 Number of nX6 0..4 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 1

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

%S 1,2329,2566719,1288066857,643689050030,360171255368417,

%T 202012748290560363,111992397576647615102,62386916161252471722500,

%U 34899624501636294504733677,19521405552266756242548467057

%N Number of nX6 0..4 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors

%C Column 6 of A203346

%H R. H. Hardin, <a href="/A203344/b203344.txt">Table of n, a(n) for n = 1..15</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Dec 31 2011

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Last modified March 29 20:15 EDT 2024. Contains 371281 sequences. (Running on oeis4.)