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A265453 Number of nX3 0..n+3-2 arrays with each element differing from its horizontal and vertical neighbors by one or two. 1
12, 250, 7422, 216466, 6056182, 161435322, 4148236142, 103476193518, 2523840866186, 60444664118334, 1426665304637082, 33267668122964462, 768000220549574982, 17579038730691587714, 399459371232734669014 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A265458.

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A265458.

Sequence in context: A245919 A245913 A245917 * A210484 A099139 A289565

Adjacent sequences:  A265450 A265451 A265452 * A265454 A265455 A265456

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2015

STATUS

approved

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Last modified October 28 03:58 EDT 2021. Contains 348313 sequences. (Running on oeis4.)