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

1,1

Comments

Column 6 of A265973.

Links

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

Example

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

Crossrefs

Cf. A265973.

Sequence in context: A108009 A263115 A210350 * A265926 A365483 A260054

Adjacent sequences: A265968 A265969 A265970 * A265972 A265973 A265974

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved