Equals two maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 5Xn array.
A221293
Equals two maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 5Xn array.
Terms
- a(0) =1a(1) =114a(2) =3332a(3) =123958a(4) =4983598a(5) =172905144a(6) =6138441061
External references
- oeis: A221293