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A208835 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 0 vertically 1
2, 16, 78, 855, 8736, 272206, 6206445, 613538688, 30091441770, 9949962265465, 995860712362464, 1146808937112275178, 223896318271083352427, 927305041435819383020944, 341298409330345173624970966 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A208840
LINKS
EXAMPLE
Some solutions for n=4
..1..1..1..1....0..1..0..1....1..0..1..0....0..1..1..0....1..0..1..1
..0..1..0..1....1..0..1..0....1..1..0..0....0..1..1..1....0..1..1..0
..1..1..1..1....0..1..0..1....1..0..1..0....1..1..1..0....1..0..1..1
..0..1..0..1....1..0..1..0....1..1..0..1....0..1..1..1....0..1..1..0
CROSSREFS
Sequence in context: A244717 A208102 A207723 * A208683 A197992 A265173
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 01 2012
STATUS
approved

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Last modified June 18 17:37 EDT 2024. Contains 373483 sequences. (Running on oeis4.)