A265585 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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