A265593 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 antidiagonal neighbors by a power of two.

16, 2194, 1427680, 505822314, 376251416588, 206165131815361, 120144000694871253, 53974676359805778756, 39402755654545704759053, 23831291055520068619322648, 16191048290312545445105091467

Offset

1,1

Comments

Row 4 of A265590.

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Cf. A265590.

Sequence in context: A121366 A101800 A208148 * A345275 A304399 A186857

Adjacent sequences: A265590 A265591 A265592 * A265594 A265595 A265596

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved