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

Author

R. H. Hardin, Dec 19 2015

Keywords

• nonn

Comments

Column 5 of A265973.

Examples

			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
		

Links

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

Crossrefs

Cf. A265973.