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A198721 Number of nX6 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor 2
52, 272410, 5315840795, 116492275674072, 2572072097029554676, 56817439251356046537693, 1255145613308486512244031328, 27727293796669883715931085888092, 612520905593913038338760996059873808 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A198723

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..11

EXAMPLE

Some solutions with all values 0 to 6 for n=3

..0..1..2..3..4..2....0..1..2..1..2..3....0..1..2..3..4..2....0..1..0..2..3..0

..1..0..1..2..3..5....1..0..1..4..3..5....1..0..1..2..1..3....1..0..1..3..4..2

..0..1..0..1..6..0....0..1..0..6..5..4....0..1..0..5..6..4....0..1..3..4..5..6

CROSSREFS

Sequence in context: A208470 A070908 A198980 * A198912 A208300 A038778

Adjacent sequences:  A198718 A198719 A198720 * A198722 A198723 A198724

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 29 2011

STATUS

approved

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Last modified October 22 18:31 EDT 2019. Contains 328319 sequences. (Running on oeis4.)