A265600 Number of n X 7 0..n*7-1 arrays with upper left zero and lower right n*7-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two.

456, 1627, 534268, 19333806, 7124418191, 108447811968, 618833411493090, 793110858664665, 1573398218250767384, 57223609153517566156, 204578625923507863105689, 634520646697818868463969

Offset

1,1

Comments

Column 7 of A265601.

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

Some solutions for n=2
..0..8.10..9..8..7..9....0..2..1..3..5..7..9....0..8.10..6..5..7..9
..4.12.11..7..9..5.13....1..3..5..1..9.11.13....4..6..8..7..6..5.13

Crossrefs

Cf. A265601.

Sequence in context: A116331 A099650 A265493 * A222552 A200784 A077578

Adjacent sequences: A265597 A265598 A265599 * A265601 A265602 A265603

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved