Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..1 nX4 array.
A220245
Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..1 nX4 array.
Terms
- a(0) =4a(1) =37a(2) =816a(3) =7140a(4) =64258a(5) =660677a(6) =6228324a(7) =59704733a(8) =580593280a(9) =5565851685a(10) =53535536290
External references
- oeis: A220245