A266321 Number of 5Xn arrays containing n copies of 0..5-1 with no element 1 greater than its west or north neighbor modulo 5 and the upper left element equal to 0.

9, 1007, 203051, 51862494, 15059945769, 4723795604740, 1561571407082978, 536705864148249261

Offset

1,1

Comments

Row 5 of A266318.

Links

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

Example

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

Crossrefs

Cf. A266318.

Sequence in context: A350967 A100601 A260029 * A228293 A197781 A197612

Adjacent sequences: A266318 A266319 A266320 * A266322 A266323 A266324

Keyword

nonn

Author

R. H. Hardin, Dec 27 2015

Status

approved