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A220919
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..2 4Xn array
0
1, 176, 3299, 61597, 1017676, 16524320, 265639495, 4258349242
OFFSET
1,2
COMMENTS
Row 4 of A220916
EXAMPLE
Some solutions for n=3
..1..1..0....1..0..0....1..0..1....0..1..0....1..0..0....1..0..1....1..0..0
..0..0..1....0..0..1....1..1..0....1..0..0....1..0..1....0..1..1....1..0..0
..0..0..1....0..1..1....1..1..1....1..0..1....1..1..0....0..1..1....0..0..0
..1..0..1....1..1..0....0..1..0....1..1..0....1..1..0....0..1..0....1..1..0
CROSSREFS
Sequence in context: A077742 A027483 A243647 * A221635 A223411 A068244
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 24 2012
STATUS
approved