A265596 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, vertical and antidiagonal neighbors by a power of two.

1, 4, 0, 177, 2228, 0, 534268, 1808623, 0, 221771015, 9350721457, 0, 1164230050591, 8981789416609, 0, 1113779465888434, 35768924074919695, 0, 6116073611940463518, 38407633854606693981, 0, 8985586499215136905778

Offset

1,2

Comments

Column 3 of A265601.

Links

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

Example

Some solutions for n=5
..0..2..1....0..2.10....0..8..7....0..8.10....0..2..1....0..2..4....0..8..4
..4..3..5....4..6..2....4..6..8....4.12.11....4..0..2....4..0..8....4..0..8
..5..7..6....8.10..6....8.10..9....8.10.12....8..4..6....2..4.12....8..4..6
..6..8.10...12.14.10....6..8.10...12..8.10....6..8.10....0..8.10...12..8.10
..4.12.14...10..6.14....7..6.14...10..6.14...10.12.14....4..6.14....4..6.14

Crossrefs

Cf. A265601.

Sequence in context: A264883 A298447 A138734 * A119010 A255018 A176050

Adjacent sequences: A265593 A265594 A265595 * A265597 A265598 A265599

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved