A265490 Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal, vertical and diagonal neighbors by a power of two.

2, 12, 0, 0, 0, 3249, 595253, 11022848, 504744595, 21040741278, 340492634409, 7110814430179, 459653526742074, 4437542161639049, 105508629834995631, 5522222536138626811, 126913917889878003282, 2918377646811870525109

Offset

1,1

Comments

Column 4 of A265494.

Links

R. H. Hardin, Table of n, a(n) for n = 1..64

Example

Some solutions for n=6
..0..4..8..0....0.16..8.12....0..4.20.12....0..4..5..3....0.16.14..6
.16..8..6..4...16..8.12.10...16..8.12.16...16..8..6..4...16..8.12.10
.14.12.10..8...14.12.10..8...14.12.10..8...14.12.10..8...14.12.10.11
.12.13.11..9...15.13.11..9...15.13.11..9...15.13.11..9...15.13.11..9
.10.11.15..7...19.17.15..7....7.11.15..7....7.11.15..7....7.11.15..7
.11..9..7.23...17.21.19.23...23.15.19.23...11..9..7.23....5..3.19.23

Crossrefs

Cf. A265494.

Sequence in context: A309863 A110982 A079331 * A327780 A350258 A364781

Adjacent sequences: A265487 A265488 A265489 * A265491 A265492 A265493

Keyword

nonn

Author

R. H. Hardin, Dec 09 2015

Status

approved