A265617 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 and diagonal neighbors by a power of two.

2, 908, 392320, 36820624, 283374980138, 281538588667512, 353827263949405920, 425853730907471177448, 889897682364060288415454, 1489134329684078361665704606, 2987652891220714880029028729466

Offset

1,1

Comments

Column 4 of A265619.

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

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

Crossrefs

Cf. A265619.

Sequence in context: A261528 A265881 A203609 * A324597 A159723 A282346

Adjacent sequences: A265614 A265615 A265616 * A265618 A265619 A265620

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved