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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. 1
16, 1098, 545952, 36820624, 41288839953, 26221405955605, 25544452579997378, 10202665890135311754, 6793627222521230286004, 3807755132746454550366863, 3480803626161613825050823467, 2175071862470489220837962752225 (list; graph; refs; listen; history; text; internal format)
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

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Last modified October 22 01:48 EDT 2021. Contains 348160 sequences. (Running on oeis4.)