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A265931 Number of 3Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique. 1
125, 4616, 17936, 72772, 273616, 1042020, 3883480, 14617920, 55503312, 210277584, 791400360, 2978940280, 11257286824, 42533780480, 160460490488, 604824610736, 2282902792488, 8619222724444, 32528290390168, 122688090414988 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A265928.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Cf. A265928.

Sequence in context: A030690 A017451 A241034 * A265477 A017583 A046232

Adjacent sequences:  A265928 A265929 A265930 * A265932 A265933 A265934

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2015

STATUS

approved

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Last modified May 21 05:31 EDT 2022. Contains 353887 sequences. (Running on oeis4.)