A208095 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, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).

1, 15, 7239, 34438557, 677352910013, 37155328943771767, 4558466722941178786343, 1086389216314310418981064791, 455984828225593734632397603864943, 313575182393219205765164919469780819082, 334231574923251058616578365205688685770273545

Offset: 0

Author

R. H. Hardin, Feb 23 2012

Keywords

• nonn

Examples

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

Links

• Andrew Howroyd, Table of n, a(n) for n = 0..100

Crossrefs

Column 5 of A208096.

Extensions

a(0)=1 prepended and terms a(6) and beyond from Andrew Howroyd, May 17 2020