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A220003 Number of n X n 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 n X n array 0
4, 7, 109, 4474, 381745, 83856137 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A220010
LINKS
EXAMPLE
Some solutions for n=3
..1..0..0....2..1..1....2..2..2....3..1..1....1..0..0....2..2..2....2..2..1
..0..0..0....1..1..1....2..2..0....3..1..1....1..0..0....2..2..2....2..1..1
..0..0..0....1..1..3....2..0..0....3..3..3....2..0..0....3..3..3....2..1..1
CROSSREFS
Sequence in context: A136276 A072954 A322723 * A024054 A362857 A289381
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 03 2012
STATUS
approved

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)