Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal, diagonal and antidiagonal neighbors by a power of two.
A265637
Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal, diagonal and antidiagonal neighbors by a power of two.
Terms
- a(0) =3a(1) =21a(2) =2660a(3) =85492a(4) =2331618a(5) =206993090a(6) =42763599173a(7) =830409551666
External references
- oeis: A265637