A265971 Number of nX6 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique.

4616, 190308, 339952, 721864, 1820904, 5006296, 13435392, 35632192, 95276272, 261736272, 709324400, 1927403116, 5292526288, 14866077768, 40973803912, 112866192572, 314639453512, 897120499588, 2505530846832, 6976518689796

Offset: 1

Author

R. H. Hardin, Dec 19 2015

Keywords

• nonn

Comments

Column 6 of A265973.

Examples

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

Links

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

Crossrefs

Cf. A265973.