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A206388 Number of nX7 0..6 arrays with no element equal to another within a city block distance of two, and new values 0..6 introduced in row major order 0
52, 62004, 21916090, 8094257014, 2965468376203 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A206389

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

..1..6..4..1..0..6..1....1..2..6..0..1..3..6....1..2..6..4..2..3..5

..2..0..3..5..2..3..4....3..4..1..5..2..0..4....4..3..0..5..1..6..4

CROSSREFS

Sequence in context: A157280 A182924 A208785 * A263223 A198525 A208580

Adjacent sequences:  A206385 A206386 A206387 * A206389 A206390 A206391

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 07 2012

STATUS

approved

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Last modified June 18 16:38 EDT 2021. Contains 345120 sequences. (Running on oeis4.)