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A201135
Number of n X n 0..5 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other
0
6, 30, 402, 7642, 129244, 1268728, 543067656, 126701693572, 19492581327460
OFFSET
1,1
COMMENTS
Diagonal of A201142
EXAMPLE
Some solutions for n=4
..0..0..0..4....0..0..2..2....0..0..1..3....0..1..1..2....0..1..2..2
..1..1..3..4....0..1..2..3....0..1..2..3....0..2..3..3....0..2..3..4
..2..2..3..5....1..3..4..5....1..4..4..5....0..2..3..5....1..3..4..4
..2..4..5..5....3..4..4..5....2..4..5..5....4..4..5..5....3..5..5..5
CROSSREFS
Sequence in context: A232978 A359882 A332041 * A369135 A111876 A119634
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 27 2011
STATUS
approved