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..3 nX4 array.
A220341
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..3 nX4 array.
Terms
- a(0) =4a(1) =89a(2) =3281a(3) =60003a(4) =1022813a(5) =16673578
External references
- oeis: A220341