A265972 Number of nX7 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique.

17012, 953072, 1282192, 2263704, 5120120, 13435392, 34825856, 92019824, 231761056, 593080872, 1481688160, 3832636952, 9840184608, 25358167888, 64217497384, 165719314208, 425547780616, 1093883487608, 2780744054920

Offset

1,1

Comments

Column 7 of A265973.

Links

R. H. Hardin, Table of n, a(n) for n = 1..160

Example

Some solutions for n=1
..3..3..1..2..2..3..1....0..4..1..0..0..4..4....0..2..2..0..3..3..4

Crossrefs

Cf. A265973.

Sequence in context: A326808 A300151 A205232 * A265927 A252647 A332100

Adjacent sequences: A265969 A265970 A265971 * A265973 A265974 A265975

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved