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..2 3Xn array.
A221661
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..2 3Xn array.
Terms
- a(0) =1a(1) =32a(2) =323a(3) =3322a(4) =29939a(5) =254682a(6) =2078316a(7) =16737048a(8) =134125927a(9) =1073540636a(10) =8589440133a(11) =68718137608a(12) =549750960379
External references
- oeis: A221661