A208053 Number of n X 5 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).

15, 4140, 18171918, 346212384169, 18633407199331522, 2254561102047453593406, 531301410253869099621138608, 220853044418109083337335323829443, 150574889720989154216201888327789028154, 159239694548038760947916228538237933340567164

Offset

1,1

Links

Andrew Howroyd, Table of n, a(n) for n = 1..50

Example

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

Crossrefs

Column 5 of A208054.

Sequence in context: A211251 A208469 A070907 * A361453 A079919 A027513

Adjacent sequences: A208050 A208051 A208052 * A208054 A208055 A208056

Keyword

nonn

Author

R. H. Hardin, Feb 22 2012

Extensions

Terms a(6) and beyond from Andrew Howroyd, Jun 25 2017

Status

approved