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A221665
Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nX4 array
0
16, 256, 3772, 63200, 1048576, 16777216, 268281856, 4294967296, 68702508544, 1099511627776, 17592133540864, 281474976710656, 4503599627370496
OFFSET
1,1
COMMENTS
Column 4 of A221666
EXAMPLE
Some solutions for n=3
..0..1..0..0....0..1..1..0....0..1..0..0....1..1..0..0....0..0..0..1
..1..0..1..1....1..1..0..1....1..1..0..0....0..0..0..1....0..0..0..1
..0..1..0..1....1..1..0..1....0..1..1..0....1..1..1..1....1..1..0..0
CROSSREFS
Sequence in context: A122609 A206571 A206791 * A227592 A206840 A222932
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 21 2013
STATUS
approved