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A197240 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,2 for x=0,1,2,3,4 1
1, 37, 507, 6284, 89527, 1209990, 16248436, 220537819, 2991520965, 40512793371, 548735832406, 7434530776423, 100724219721520, 1364590772374292, 18486981607134199, 250455940483033208, 3393127984714324346 (list; graph; refs; listen; history; text; internal format)
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 1's, every 4 is next to 4 2's

Column 6 of A197242

LINKS

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

EXAMPLE

Some solutions containing all values 0 to 4 for n=4

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

..2..2..2..0..2..2....0..1..0..2..2..2....2..4..2..0..0..0....0..0..2..4..2..2

..2..4..2..1..3..1....0..0..0..2..4..2....2..2..2..1..3..1....0..1..2..2..0..2

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

CROSSREFS

Sequence in context: A086025 A197215 A264419 * A220331 A142764 A256811

Adjacent sequences:  A197237 A197238 A197239 * A197241 A197242 A197243

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 12 2011

STATUS

approved

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Last modified January 22 01:28 EST 2022. Contains 350481 sequences. (Running on oeis4.)