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A223614
Number of n X n 0..1 arrays with rows and columns unimodal
0
2, 16, 240, 4466, 89630, 1856100, 39162020, 840122330, 18350758538, 409124396540, 9333564282142, 218396645933584, 5252293916506694
OFFSET
1,1
COMMENTS
Diagonal of A223620
EXAMPLE
Some solutions for n=4
..1..1..0..0....0..1..0..0....0..0..0..0....1..0..0..0....0..1..1..0
..1..1..0..0....1..1..0..0....0..1..0..0....1..1..0..0....0..1..1..0
..1..1..0..0....0..1..0..0....0..1..1..0....1..1..1..1....0..1..1..0
..0..0..0..1....0..0..1..1....0..1..1..0....1..1..1..0....0..1..1..1
CROSSREFS
Sequence in context: A376389 A280394 A376392 * A152029 A152069 A188767
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 24 2013
STATUS
approved