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A188515
Number of n X n binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally
0
2, 16, 229, 6760, 342240, 32470385, 5593606875, 1811059364020, 1103649329789000, 1283030748540574429, 2858394905740312536937, 12271770983630246007920447, 101822638806356395388304091003, 1636793382556126237888634491914956
OFFSET
1,1
COMMENTS
Diagonal of A188523
EXAMPLE
Some solutions for 3X3
..0..1..0....0..0..1....1..1..1....0..0..0....0..0..0....1..0..1....1..1..1
..1..1..1....0..1..0....0..0..1....0..0..0....0..0..0....0..1..0....0..0..1
..0..1..1....1..0..1....0..0..1....0..0..1....0..1..1....1..1..1....1..0..1
CROSSREFS
Sequence in context: A377445 A223631 A188500 * A152542 A206877 A206995
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 02 2011
STATUS
approved