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A265592
Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.
1
3, 79, 9327, 927797, 82725668, 12404184853, 1961916558139, 205199911524811, 32566506281706134, 3625304390972323537, 618755342504397622109, 87849263845468588422281, 14938881681298157851105131
OFFSET
1,1
COMMENTS
Row 3 of A265590.
LINKS
EXAMPLE
Some solutions for n=3
..0..8..0....0..4..6....0..8..0....0..4..0....0..4..5....0..1..0....0..4..5
..0..1..5....6..4..8....0..4..5....3..2..3....5..4..3....5..1..3....6..7..8
..2..6..8....8..6..8....5..6..8....6..7..8....3..4..8....0..4..8....5..4..8
CROSSREFS
Cf. A265590.
Sequence in context: A062660 A331673 A065399 * A105065 A011187 A327250
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2015
STATUS
approved