Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 3Xn array.
A220796
Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 3Xn array.
Terms
- a(0) =1a(1) =23a(2) =142a(3) =1753a(4) =15486a(5) =132977a(6) =1115041a(7) =9161834a(8) =74617693a(9) =602687874a(10) =4850347565a(11) =38924669434
External references
- oeis: A220796