Equals one maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 3Xn array.
A221064
Equals one maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 3Xn array.
Terms
- a(0) =1a(1) =32a(2) =323a(3) =3322a(4) =29939a(5) =254900a(6) =2080204a(7) =16745866a(8) =134159160a(9) =1073654544a(10) =8589790360a(11) =68719289140a(12) =549755523233
External references
- oeis: A221064