Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..3 nX4 array.
A221631
Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..3 nX4 array.
Terms
- a(0) =8a(1) =176a(2) =3848a(3) =64828a(4) =1047216a(5) =16774800a(6) =268431156a(7) =4294959928a(8) =68719464306
External references
- oeis: A221631