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A208100 Number of 5 X n 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
1, 52, 10900, 43366459, 746823293346, 37155328943771767, 4226534204353128532380, 947741983969338430602294081, 378161752496622695975714927056844, 249107761813131722624691729833262083766, 255811781476365074058962776043470702114960079 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

EXAMPLE

Some solutions for n=4:

..0..1..0..1....0..1..0..1....0..1..0..1....0..1..0..1....0..1..0..1

..0..1..2..1....0..2..0..1....0..1..0..1....0..1..0..1....0..1..0..1

..0..1..0..1....0..1..0..1....0..1..0..1....0..1..0..1....2..1..0..3

..0..1..0..1....0..2..0..1....0..1..0..1....0..1..2..1....0..1..0..1

..3..1..0..1....0..1..3..1....0..1..0..1....0..1..0..1....0..3..0..1

CROSSREFS

Row 5 of A208096.

Sequence in context: A209741 A209462 A209524 * A232521 A346934 A200806

Adjacent sequences:  A208097 A208098 A208099 * A208101 A208102 A208103

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 23 2012

EXTENSIONS

a(0)=1 prepended and terms a(6) and beyond from Andrew Howroyd, May 18 2020

STATUS

approved

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Last modified September 25 23:58 EDT 2021. Contains 347664 sequences. (Running on oeis4.)