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A219707
Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array
0
4, 13, 297, 23506, 4745284, 3084196884, 7921920681423
OFFSET
1,1
COMMENTS
Diagonal of A219714
EXAMPLE
Some solutions for n=3
..1..0..0....0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....0..0..0
..1..0..2....0..0..0....0..0..3....1..0..2....0..0..1....1..0..1....0..0..2
..2..2..3....2..0..1....3..0..0....2..1..1....3..1..2....3..1..1....3..1..1
CROSSREFS
Sequence in context: A348140 A376025 A344513 * A219822 A048558 A219571
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 26 2012
STATUS
approved