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A220540
Equals one maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 4Xn array
0
1, 96, 322, 6620, 42066, 541829, 4737799, 50261056, 476949627, 4828330418, 47120284988, 469126471434, 4617294604461
OFFSET
1,2
COMMENTS
Row 4 of A220537
EXAMPLE
Some solutions for n=3
..1..0..1....1..1..1....0..0..0....0..0..0....1..0..1....0..0..0....1..1..1
..1..0..0....1..0..0....0..0..1....0..1..0....1..1..0....1..0..1....1..0..0
..1..0..0....1..0..0....1..0..1....0..0..1....0..0..0....1..0..1....1..0..1
..1..1..1....1..1..1....0..1..0....1..1..1....0..0..0....0..0..0....1..0..1
CROSSREFS
Sequence in context: A048189 A304830 A301459 * A292345 A084048 A167983
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 15 2012
STATUS
approved