Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nX4 array.
A220429
Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nX4 array.
Terms
- a(0) =4a(1) =94a(2) =2103a(3) =40412a(4) =735555a(5) =12702453a(6) =213282872a(7) =3513823635
External references
- oeis: A220429