A265638 Number of 4Xn 0..4*n-1 arrays with upper left zero and lower right 4*n-1 and each element differing from its horizontal, diagonal and antidiagonal neighbors by a power of two.

16, 585, 35328, 2723409, 1299561587, 361488020990, 119394507902804, 16937773173058482, 5337007476880963123, 1131086756675633606854, 434352600687189806198473, 97056545070160030733038499

Offset

1,1

Comments

Row 4 of A265635.

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

Some solutions for n=3
..0..4..6....0..4..6....0..8..6....0..4..8....0..4..3....0..1..3....0..4..2
..8..4..5....6..4..8....9..8..6....6..4..8....5..4..5....9..1..3....3..4..5
..8..9..5....6..7..6....9..7..9....2.10..8....6..7..6....5..7..5....5..7..8
..8..9.11....6..7.11....3..7.11....8.10.11....8.10.11....8..7.11....8..7.11

Crossrefs

Cf. A265635.

Sequence in context: A210829 A222845 A187403 * A307943 A171210 A266129

Adjacent sequences: A265635 A265636 A265637 * A265639 A265640 A265641

Keyword

nonn

Author

R. H. Hardin, Dec 11 2015

Status

approved