

A197749


Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,0 for x=0,1,2,3,4


1



13, 465, 17332, 462515, 15943658, 517762136, 16946352492, 558436739769, 18226535390462, 597638865062474, 19604855669620153, 642346166847903042, 21058400260743006736, 690290048778192927506, 22625839121192679890893
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OFFSET

1,1


COMMENTS

Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 1's, every 4 is next to 4 0's
Column 7 of A197750


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..96


EXAMPLE

Some solutions containing all values 0 to 4 for n=4
..0..2..0..0..0..0..0....0..0..0..0..0..0..0....0..1..3..1..0..0..2
..2..2..0..4..0..0..2....0..4..0..0..0..0..0....1..0..1..0..4..0..0
..0..0..0..0..1..0..2....0..0..2..1..0..0..0....3..1..1..2..0..4..0
..0..0..2..1..3..1..0....0..2..1..3..1..2..0....1..1..3..1..0..0..0


CROSSREFS

Sequence in context: A081862 A198012 A197895 * A198154 A197234 A262570
Adjacent sequences: A197746 A197747 A197748 * A197750 A197751 A197752


KEYWORD

nonn


AUTHOR

R. H. Hardin Oct 17 2011


STATUS

approved



