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A198722 Number of nX7 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor 1
203, 7817980, 846047363854, 96356630422085931, 10996875674843226590993, 1255145613308486512244031328 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A198723

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

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

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

..1..0..1..0..2..6..4....1..0..1..0..4..0..2....1..0..1..0..4..5..1

..0..1..0..3..6..0..2....0..1..0..3..5..3..6....0..1..0..3..6..1..2

CROSSREFS

Sequence in context: A208586 A208465 A208471 * A198913 A224983 A138605

Adjacent sequences:  A198719 A198720 A198721 * A198723 A198724 A198725

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 29 2011

STATUS

approved

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Last modified November 17 01:10 EST 2019. Contains 329210 sequences. (Running on oeis4.)