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A265489 Number of nX3 0..n*3-1 arrays with upper left zero and lower right n*3-1 and each element differing from its horizontal, vertical and diagonal neighbors by a power of two. 1
1, 0, 36, 0, 0, 2506, 294152, 0, 19516777, 83909226, 0, 10678005713, 545032909689, 0, 102275177508104, 395694498744634, 0, 81469369938066316, 2375486573786293387, 0, 404350295447676882458, 3081651598084594364137, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A265494.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..135

EXAMPLE

Some solutions for n=6

..0..2.10....0..8..4....0..2..4....0..8..4....0..2.10....0..8.10....0..8.10

..2..4..6....8.16.12....8..4..0....8..4..0....2..4..6....8.16.12....8.16.12

..4..3..5...10.12..8...16.12..8....7..6..8....1..3..2...16.12..8...10.12.14

..3..5..7....9.11.10...15.14.16....9..5..7....9..5..1...15.14.16...12.11.10

..5..1..9...17.13..9...17.13.15...17.13..9...17.13..9...11.13.15...11.13..9

..1..9.17...13..9.17...13.15.17...13..9.17....1..9.17....7.15.17....7..9.17

CROSSREFS

Cf. A265494.

Sequence in context: A010113 A167264 A292156 * A262795 A309379 A022071

Adjacent sequences:  A265486 A265487 A265488 * A265490 A265491 A265492

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2015

STATUS

approved

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Last modified May 17 11:26 EDT 2022. Contains 353745 sequences. (Running on oeis4.)