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A220333 Equals two maps: number of 6Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 6Xn array 0
1, 351, 15316, 876714, 46094354, 2680626797 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 6 of A220328
LINKS
Table of n, a(n) for n=1..6.
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..1....0..0..0....0..1..0....0..1..0....0..1..0....0..0..0
..0..0..1....1..0..0....0..0..0....0..0..1....1..1..1....0..1..0....1..0..0
..1..0..0....0..0..0....0..1..1....1..0..0....0..1..1....1..1..1....0..1..1
..0..0..0....0..0..0....1..0..0....0..1..1....0..1..1....0..1..1....1..0..1
..0..0..0....0..1..0....0..1..0....0..1..0....0..0..0....0..1..0....0..1..1
..1..1..0....0..0..0....0..1..0....1..0..0....0..1..0....0..1..0....0..0..0
CROSSREFS
Sequence in context: A273255 A264426 A231707 * A221294 A220686 A167820
Adjacent sequences: A220330 A220331 A220332 * A220334 A220335 A220336
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2012
STATUS
approved

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Last modified December 10 19:44 EST 2023. Contains 367717 sequences. (Running on oeis4.)