login
A221631
Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..3 nX4 array
1
8, 176, 3848, 64828, 1047216, 16774800, 268431156, 4294959928, 68719464306, 1099511606852, 17592186009096, 281474976650752, 4503599627268410, 72057594037753300, 1152921504606547488, 18446744073709037416
OFFSET
1,1
COMMENTS
Column 4 of A221632
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1..0....1..1..0..1....1..0..1..1....1..0..0..1....1..1..1..1
..1..0..0..0....1..0..1..0....1..1..1..0....0..1..1..1....0..1..0..1
..1..1..1..0....0..0..1..0....1..0..0..1....1..0..0..1....0..1..1..1
CROSSREFS
Sequence in context: A220966 A220544 A220749 * A064342 A251578 A099175
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 21 2013
STATUS
approved