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A188844
Number of n X n binary arrays without the pattern 0 0 1 vertically, antidiagonally or horizontally.
1
2, 16, 219, 5711, 262588, 23131221, 3821933610, 1214926248918, 740978404013252, 873971605623906976, 1995026546716994781891, 8837351494869683292347918, 76024359194576916691616836771, 1271387131008663780693344655620080
OFFSET
1,1
COMMENTS
Diagonal of A188851.
LINKS
EXAMPLE
Some solutions for 3 X 3
..1..0..0....1..1..1....1..1..1....1..1..0....1..0..0....0..1..0....0..1..0
..0..1..1....1..1..0....1..0..1....1..1..1....1..1..1....1..1..1....1..1..1
..1..0..0....1..1..0....1..1..0....1..0..0....1..0..0....0..0..0....1..0..0
CROSSREFS
Cf. A188851.
Sequence in context: A264543 A223638 A188688 * A187657 A047657 A377452
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2011
STATUS
approved