A265971 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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