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A220038 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array 0
4, 13, 184, 8337, 904715, 310371126 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A220044
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0....1..1..1....1..0..0....2..0..0....0..0..0....2..2..2....2..0..0
..0..0..0....1..1..1....1..0..0....1..0..1....0..0..0....2..2..2....1..0..0
..0..3..0....3..2..2....2..0..3....1..1..1....3..0..2....2..2..2....1..0..1
CROSSREFS
Sequence in context: A198159 A322659 A042537 * A132512 A203221 A284700
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 03 2012
STATUS
approved

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Last modified May 27 03:56 EDT 2024. Contains 372847 sequences. (Running on oeis4.)