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A219600 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array 0
28, 247, 4129, 60252, 1093496, 21435360, 415752625 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A219595

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....0..0..0....1..1..1

..1..0..0....0..0..0....1..0..0....0..0..0....1..1..0....1..0..0....1..1..1

..1..1..1....1..1..1....1..1..0....1..0..0....1..0..0....1..1..1....1..1..0

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

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

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

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

CROSSREFS

Sequence in context: A112797 A085438 A188526 * A092341 A042522 A025517

Adjacent sequences:  A219597 A219598 A219599 * A219601 A219602 A219603

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 23 2012

STATUS

approved

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Last modified August 15 01:40 EDT 2020. Contains 336484 sequences. (Running on oeis4.)