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.
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.
Terms
- a(0) =128a(1) =1364a(2) =2097152a(3) =268435456a(4) =25241048576
External references
- oeis: A221071