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A224385
Number of n X n 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing
0
4, 100, 6094, 497958, 45648753, 4364554008, 424124440444, 41437298593764, 4056267677083719, 397503667576768219
OFFSET
1,1
COMMENTS
Diagonal of A224391
EXAMPLE
Some solutions for n=3
..1..1..1....1..1..2....1..2..3....0..0..1....1..2..2....1..3..3....1..1..1
..0..2..2....2..2..3....3..3..3....2..2..3....2..3..3....2..3..3....1..2..2
..2..3..3....0..2..2....1..1..2....1..2..2....0..0..1....0..1..3....0..2..3
CROSSREFS
Sequence in context: A224167 A223858 A223981 * A249939 A224018 A198278
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 05 2013
STATUS
approved