A265970 Number of nX5 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique.

1252, 38096, 89776, 230784, 631264, 1820904, 5120120, 14529352, 40869008, 116148576, 330124104, 935364856, 2641623616, 7497789512, 21321031376, 60505118208, 171246024504, 485965902816, 1381610459280, 3923852199568

Offset

1,1

Comments

Column 5 of A265973.

Links

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

Example

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

Crossrefs

Cf. A265973.

Sequence in context: A045186 A344034 A344035 * A264291 A265925 A252149

Adjacent sequences: A265967 A265968 A265969 * A265971 A265972 A265973

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved