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A203342 Number of nX4 0..4 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 1

%I

%S 1,95,9555,503409,23912553,1288066857,72606563663,4048732987777,

%T 224803736954347,12536125586656167,701080855015785026,

%U 39228019277755257087,2195365093327710655400,122904723679862273403598

%N Number of nX4 0..4 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors

%C Column 4 of A203346

%H R. H. Hardin, <a href="/A203342/b203342.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Dec 31 2011

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Last modified June 29 09:21 EDT 2022. Contains 354910 sequences. (Running on oeis4.)