A265586 Number of nX3 0..n*3-1 arrays with upper left zero and lower right n*3-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.

1, 84, 9327, 1427680, 308395359, 99770416100, 38840832559548, 10692035281792418, 4325881418160722213, 1373485273994265714224, 622008060358478772620983, 286739797768833085519267516

Offset

1,2

Comments

Column 3 of A265590.

Links

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

Example

Some solutions for n=3
..0..4..8....0..8..4....0..2..6....0..1..5....0..4..5....0..4..2....0..8..6
..8..4..5....7..3..2....0..4..8....2..4..6....8..6..2....6..4..8....6..7..8
..5..4..8....2..4..8....5..6..8....8..7..8....4..0..8....3..4..8....6..7..8

Crossrefs

Cf. A265590.

Sequence in context: A223991 A224022 A283947 * A278725 A186245 A224429

Adjacent sequences: A265583 A265584 A265585 * A265587 A265588 A265589

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved