A267839 Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any northeast neighbor modulo 6 and the upper left element equal to 0.

120, 2430, 147340, 13895954, 1578668020, 197549600170, 26227806728176, 3644859555696454, 525118327614214424

Offset

1,1

Comments

Row 6 of A267836.

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Cf. A267836.

Sequence in context: A056286 A166779 A038745 * A220050 A032180 A000553

Adjacent sequences: A267836 A267837 A267838 * A267840 A267841 A267842

Keyword

nonn

Author

R. H. Hardin, Jan 21 2016

Status

approved