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A265633 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, diagonal and antidiagonal neighbors by a power of two. 1
2, 559, 85492, 2723409, 3979565339, 796308532514, 168471146612539, 92689740495424484, 35207791095370659034, 14785029526528063866456, 7605208617717963440942640, 3423109300796521198266195848 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A265635.
LINKS
EXAMPLE
Some solutions for n=3
..0..4..0..2....0..2..0..8....0..8..9..1....0..2..3.11....0..8.10..8
..3..2..3..1....1..2.10..8....7..8..9.10....0..4..3..2....7..8..7..8
..6..4..3.11...10..9.10.11....9.11..9.11....5..1..3.11....9..8.10.11
CROSSREFS
Cf. A265635.
Sequence in context: A058429 A336784 A201247 * A117509 A285690 A201603
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 11 2015
STATUS
approved

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Last modified May 21 19:35 EDT 2024. Contains 372738 sequences. (Running on oeis4.)