A197088 - OEIS

A197088

Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4

1, 65, 1780, 37952, 939690, 21996614, 522569033, 12390326286, 293837693200, 6966924806564, 165206045134788, 3917486496222700, 92893560385495116, 2202749723178772681, 52232959654975192248, 1238579861912517506541

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OFFSET

1,2

COMMENTS

Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1's

Column 6 of A197090

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..0..1..0..3..0..0....0..3..0..0..0..0....0..0..3..0..0..0....0..2..2..0..3..0

..0..3..0..0..3..1....0..0..1..0..0..3....3..0..0..0..0..0....0..2..2..3..0..3

..0..0..3..0..0..0....3..0..3..0..0..0....0..0..3..0..0..3....0..0..0..0..3..0

..0..0..1..0..3..0....0..3..0..0..0..0....0..0..1..0..0..0....0..0..3..0..1..0

CROSSREFS

Sequence in context: A221038 A221501 A183271 * A031604 A002502 A333118

Adjacent sequences: A197085 A197086 A197087 * A197089 A197090 A197091

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 10 2011

STATUS

approved