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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). 2
1, 15, 7239, 34438557, 677352910013, 37155328943771767, 4558466722941178786343, 1086389216314310418981064791, 455984828225593734632397603864943, 313575182393219205765164919469780819082, 334231574923251058616578365205688685770273545 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
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
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

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Last modified June 24 19:44 EDT 2024. Contains 373690 sequences. (Running on oeis4.)