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A220458
Equals one maps: number of n X 4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 n X 4 array.
0
8, 74, 691, 6255, 58217, 530196, 4787009, 42979644, 385002942, 3443191561, 30764444125
OFFSET
1,1
COMMENTS
Column 4 of A220461.
EXAMPLE
Some solutions for n=3
..1..0..1..1....1..0..0..1....0..1..1..1....0..1..0..0....1..0..0..1
..0..0..0..1....0..0..1..1....0..0..0..0....0..0..0..1....0..0..0..0
..1..0..0..1....1..0..0..0....1..1..0..1....0..1..1..1....0..0..1..0
CROSSREFS
Cf. A220461.
Sequence in context: A187529 A282880 A190953 * A144850 A337370 A357208
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 15 2012
STATUS
approved