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A220015 Number of 6Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 6Xn array 0
56, 308, 9094, 204056, 4176405, 83856137, 1708594026, 34797091227, 689161340620 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A220010

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A205228 A110554 A253922 * A005912 A264581 A220202

Adjacent sequences:  A220012 A220013 A220014 * A220016 A220017 A220018

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 03 2012

STATUS

approved

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Last modified September 23 11:17 EDT 2020. Contains 337299 sequences. (Running on oeis4.)