A220174 Sum of neighbor maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nX3 array

8, 48, 404, 4096, 31744, 262144, 2083808, 16728064, 134217728, 1073741824, 8586101128, 68719476736, 549755813888, 4397962625024, 35184307884032, 281474976710656, 2251796592459776, 18014398509481984, 144115183550922752

Offset

1,1

Comments

Column 3 of A220177

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3
..0..1..0....1..0..1....1..0..0....0..0..0....0..0..0....0..0..1....1..0..0
..0..0..0....0..0..0....0..0..0....0..0..0....1..1..0....0..0..1....0..1..1
..1..1..1....0..0..0....0..1..1....1..1..1....0..1..1....0..0..0....1..1..1

Crossrefs

Sequence in context: A013186 A165506 A165748 * A239888 A072169 A221668

Adjacent sequences: A220171 A220172 A220173 * A220175 A220176 A220177

Keyword

nonn

Author

R. H. Hardin Dec 06 2012

Status

approved