Number of (n+2) X (2+2) 0..2 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order.
A253030
Number of (n+2) X (2+2) 0..2 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order.
Terms
- a(0) =1647a(1) =12987a(2) =102060a(3) =802899a(4) =6320511a(5) =49756086a(6) =391717269a(7) =3084008175a(8) =24280718976a(9) =191165802975
External references
- oeis: A253030