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A224152
Number of n X n 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
1
2, 12, 89, 574, 3469, 20065, 114537, 650819, 3705824, 21181267, 121617211, 701255335, 4058735341, 23565789117, 137190976378, 800437914689, 4678794395883, 27391873966579, 160581355210547, 942493889605853
OFFSET
1,1
COMMENTS
Diagonal of A224158.
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0....1..1..0....1..0..0....0..0..0....1..1..0....0..1..0....0..0..0
..0..0..0....1..1..0....0..1..0....0..0..0....1..0..0....1..1..1....0..1..0
..1..0..0....1..0..0....1..0..0....0..0..1....0..1..0....1..1..1....1..0..0
CROSSREFS
Cf. A224158.
Sequence in context: A372090 A143923 A079858 * A174356 A355138 A121357
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 31 2013
STATUS
approved