Equals two maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 4Xn array.
A220797
Equals two maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 4Xn array.
Terms
- a(0) =1a(1) =94a(2) =1224a(3) =32507a(4) =602536a(5) =10731537a(6) =183846017
External references
- oeis: A220797