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A220013 Number of 4Xn 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 4Xn array 1
20, 58, 560, 4474, 29055, 172143, 983187, 5489377, 29766873, 155831210, 787372571, 3852104643, 18307862344, 84697562976, 381831482922, 1679012288699, 7209808373614, 30272302102169, 124439451139499, 501340832583866 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A220010

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A124713 A126374 A229536 * A220046 A275167 A344200

Adjacent sequences:  A220010 A220011 A220012 * A220014 A220015 A220016

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 03 2012

STATUS

approved

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Last modified October 2 23:51 EDT 2022. Contains 357230 sequences. (Running on oeis4.)