A267559 Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any north or northeast neighbors modulo 5 and the upper left element equal to 0.

1, 2, 5, 14, 55, 287, 2165, 21835, 252726, 3096256, 38732624, 488632335, 6180876159, 78236666009, 990197916540, 12529967750879, 158558090021956, 2007064954804659

Offset

1,2

Comments

Row 5 of A267553.

Links

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

Example

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

Crossrefs

Cf. A267553.

Sequence in context: A267561 A267560 A122594 * A047136 A047042 A174795

Adjacent sequences: A267556 A267557 A267558 * A267560 A267561 A267562

Keyword

nonn

Author

R. H. Hardin, Jan 17 2016

Status

approved