Equals one maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 n X 3 array.
A220457
Equals one maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 n X 3 array.
Terms
- a(0) =4a(1) =22a(2) =108a(3) =691a(4) =3872a(5) =20897a(6) =112582a(7) =605780a(8) =3249132a(9) =17400206a(10) =93125105a(11) =498148634a(12) =2663790130a(13) =14241169579a(14) =76125716517a(15) =406890173406
External references
- oeis: A220457