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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 28 2012
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)