Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 3Xn array.
A220937
Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 3Xn array.
Terms
- a(0) =1a(1) =12a(2) =92a(3) =673a(4) =5912a(5) =48212a(6) =395844a(7) =3232729a(8) =26184472a(9) =211363254
External references
- oeis: A220937