A265585 Number of nX2 0..n*2-1 arrays with upper left zero and lower right n*2-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.

1, 2, 79, 2194, 142675, 7604426, 451816635, 25239520503, 3036006671645, 285945150234342, 28992125588332051, 2716076278306796693, 290648033962717209508, 28977699859149135616061, 2924647093592211787193603

Offset

1,2

Comments

Column 2 of A265590.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A265590.

Sequence in context: A166052 A045484 A113152 * A060051 A100421 A319438

Adjacent sequences: A265582 A265583 A265584 * A265586 A265587 A265588

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved