A221071 Sum of neighbor maps: number of nX7 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 nX7 array

128, 1364, 2097152, 268435456, 25241048576, 4398046511104, 562949953421312, 70342550622109696

Offset

1,1

Comments

Column 7 of A221072

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A133061 A188822 A181211 * A070055 A247930 A200842

Adjacent sequences: A221068 A221069 A221070 * A221072 A221073 A221074

Keyword

nonn

Author

R. H. Hardin Dec 31 2012

Status

approved