A208095 - OEIS

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

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OFFSET

0,2

LINKS

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

EXAMPLE

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

CROSSREFS

Column 5 of A208096.

Sequence in context: A066968 A113795 A205155 * A271402 A205304 A334835

Adjacent sequences: A208092 A208093 A208094 * A208096 A208097 A208098

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 23 2012

EXTENSIONS

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

STATUS

approved