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A201425
Number of n X n 0..2 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.
0
3, 11, 99, 33740, 28384610, 54217235230, 6095310292410589
OFFSET
1,1
COMMENTS
Diagonal of A201432.
EXAMPLE
Some solutions for n=4
..0..1..1..2....0..1..2..2....0..0..0..1....0..0..0..2....0..0..1..2
..1..1..1..0....0..2..1..1....0..1..2..1....1..1..2..0....0..1..1..1
..1..2..2..0....1..0..1..1....0..1..2..1....1..1..2..0....0..2..2..0
..2..0..2..0....2..0..0..2....2..2..2..1....2..2..1..2....1..2..2..1
CROSSREFS
Cf. A201432.
Sequence in context: A120587 A086914 A123996 * A008561 A348154 A072640
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2011
STATUS
approved