A264950 Number of 7Xn arrays containing n copies of 0..7-1 with no equal horizontal neighbors and new values introduced sequentially from 0.

1, 79008, 8403205056, 1122409297218768, 173357342638694530002, 29526013062983124375791088, 5395269899168064415277849230476

Offset

1,2

Comments

Row 7 of A264945.

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Cf. A264945.

Sequence in context: A184230 A186612 A180973 * A204570 A183640 A157661

Adjacent sequences: A264947 A264948 A264949 * A264951 A264952 A264953

Keyword

nonn

Author

R. H. Hardin, Nov 29 2015

Status

approved