A267631 Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any west neighbor modulo 5 and the upper left element equal to 0.

24, 138, 1576, 29387, 679735, 17761798, 490407156, 13531702872, 364823204989, 9669161777304

Offset: 1

Author

R. H. Hardin, Jan 18 2016

Keywords

• nonn

Comments

Row 5 of A267629.

Examples

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

Crossrefs

Cf. A267629.