A265622 Number of 4Xn 0..4*n-1 arrays with upper left zero and lower right 4*n-1 and each element differing from its horizontal and diagonal neighbors by a power of two.

16, 1098, 545952, 36820624, 41288839953, 26221405955605, 25544452579997378, 10202665890135311754, 6793627222521230286004, 3807755132746454550366863, 3480803626161613825050823467, 2175071862470489220837962752225

Offset

1,1

Comments

Row 4 of A265619.

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

Some solutions for n=2
..0..1....0..4....0..4....0..2....0..1....0..2....0..4....0..4....0..2....0..1
..1..2....3..4....0..4....3..4....6..4....3..1....2..1....3..1....3..2....6..4
..5..3....5..4....6..4....3..5....5..7....3..2....5..1....5..4....3..7....6..4
..6..7....5..7....5..7....3..7....5..7....3..7....5..7....3..7....6..7....6..7

Crossrefs

Cf. A265619.

Sequence in context: A232571 A203096 A210822 * A144915 A209541 A279295

Adjacent sequences: A265619 A265620 A265621 * A265623 A265624 A265625

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved