A264957 Number of 5Xn arrays containing n copies of 0..5-1 with no equal horizontal or vertical neighbors.

120, 22320, 4857120, 1286876160, 378296480400, 119417031121560, 39653227389625800, 13674544263132249120

Offset

1,1

Comments

Row 5 of A264954.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A264954.

Sequence in context: A289566 A229693 A105188 * A270604 A151604 A104008

Adjacent sequences: A264954 A264955 A264956 * A264958 A264959 A264960

Keyword

nonn

Author

R. H. Hardin, Nov 29 2015

Status

approved