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A265597 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, vertical and antidiagonal neighbors by a power of two. 1
2, 8, 177, 2908, 35824, 572832, 19333806, 160881658, 5664401710, 229732307880, 3100452091943, 63631711298155, 3224821577173159, 36788488008041465, 849761149215404287, 34792070819029655772, 737955075337274350302 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A265601.
LINKS
EXAMPLE
Some solutions for n=4
..0..4..8..9....0..2..4..3....0..2..4..6....0..2.10..6....0..1..5..3
..2..6..7..5....1..3..5..7....4..6..8..7....4..6.14.10....2..3..7.11
.10..8..9.13....5..1..3.11....5..7..9.11....2.10.12.14....1..5..9.13
..6..7.11.15....9..5..7.15....6..5.13.15....6.14.13.15....9..7.11.15
CROSSREFS
Cf. A265601.
Sequence in context: A167009 A350808 A009713 * A213200 A317794 A009377
KEYWORD
nonn
AUTHOR
_R. H. Hardin_, Dec 10 2015
STATUS
approved

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Last modified March 4 23:31 EST 2024. Contains 370537 sequences. (Running on oeis4.)