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A219805 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array 1
20, 26, 255, 1605, 8779, 43246, 202771, 925422, 4126107, 17906335, 75378166, 307556583, 1218294836, 4697943812, 17681747822, 65077780434, 234502581210, 827942963501, 2865918328654, 9732510738469, 32448992255590, 106298597073959 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A219802

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..135

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A067065 A280307 A101070 * A219456 A248787 A070717

Adjacent sequences:  A219802 A219803 A219804 * A219806 A219807 A219808

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 28 2012

STATUS

approved

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Last modified November 29 15:46 EST 2021. Contains 349416 sequences. (Running on oeis4.)