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A208300 Number of nX6 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal or antidiagonal neighbor (colorings ignoring permutations of colors) 0
52, 373780, 33093356640, 14216420563705724, 19558496206477343793824 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A208301

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A198980 A198721 A198912 * A038778 A116107 A114787

Adjacent sequences:  A208297 A208298 A208299 * A208301 A208302 A208303

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 25 2012

STATUS

approved

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Last modified October 23 23:51 EDT 2019. Contains 328379 sequences. (Running on oeis4.)