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A220334 Equals two maps: number of 7Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 7Xn array 0
1, 1081, 84196, 10004541, 1026529800, 119808040854 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 7 of A220328
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0....0..1..0....0..0..0....0..1..0....0..0..1....0..1..1....0..1..1
..0..1..0....1..1..0....0..0..0....0..1..0....1..0..0....0..1..0....0..0..1
..1..0..0....1..0..0....1..1..1....1..0..0....0..0..0....1..1..0....1..0..0
..0..1..1....0..1..0....0..0..0....0..1..1....0..0..0....0..1..0....1..0..0
..1..0..0....0..0..0....0..0..0....1..0..0....0..1..1....1..1..0....0..1..0
..1..0..0....0..0..1....0..0..0....0..0..0....1..0..1....0..1..0....0..0..0
..0..1..0....0..1..0....0..1..0....1..0..0....1..1..0....1..0..0....1..0..0
CROSSREFS
Sequence in context: A338407 A078214 A251199 * A221295 A220687 A188240
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2012
STATUS
approved

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Last modified February 25 09:35 EST 2024. Contains 370313 sequences. (Running on oeis4.)