A265968 - OEIS

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A265968

Number of nX3 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique.

92, 1504, 6112, 23920, 89776, 339952, 1282192, 4848664, 18309816, 69096768, 260725200, 984425248, 3713747128, 14013775968, 52889517856, 199579642728, 753070588072, 2841950773104, 10724343546776, 40468052281360

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 3 of A265973.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A265973.

Sequence in context: A172449 A251934 A064203 * A179798 A232795 A269439

Adjacent sequences: A265965 A265966 A265967 * A265969 A265970 A265971

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2015

STATUS

approved