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A265966 Number of n X n 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique. 0
5, 288, 6112, 74248, 631264, 5006296, 34825856, 249438952, 1579115104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A265973.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A265973.

Sequence in context: A276556 A283569 A252173 * A337540 A227579 A257045

Adjacent sequences:  A265963 A265964 A265965 * A265967 A265968 A265969

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2015

STATUS

approved

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Last modified January 24 19:34 EST 2022. Contains 350565 sequences. (Running on oeis4.)