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A198625 Number of nX6 0..5 arrays with values 0..5 introduced in row major order and each element equal to at least one horizontal or vertical neighbor 0
6, 3521, 3003238, 5040999127, 9630271257812 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A198627

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A172955 A283885 A198706 * A198653 A198660 A048542

Adjacent sequences: A198622 A198623 A198624 * A198626 A198627 A198628

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 27 2011

STATUS

approved

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Last modified April 1 15:49 EDT 2023. Contains 361695 sequences. (Running on oeis4.)