Equals one maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..2 4Xn array.
A221662
Equals one maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..2 4Xn array.
Terms
- a(0) =1a(1) =128a(2) =2735a(3) =58710a(4) =1016831a(5) =16705642a(6) =268216870a(7) =4294510063a(8) =68718137467
External references
- oeis: A221662