Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nX4 array.
A220933
Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nX4 array.
Terms
- a(0) =4a(1) =52a(2) =673a(3) =9107a(4) =123958a(5) =1686304a(6) =22931365a(7) =311813067a(8) =4239917031a(9) =57652874111a(10) =783943412638
External references
- oeis: A220933