Number of n X n 0..2 arrays with no element equal to any value at offset (0,-1), (-1,-1) or (-2,0) and new values introduced in order 0..2.
A274889
Number of n X n 0..2 arrays with no element equal to any value at offset (0,-1), (-1,-1) or (-2,0) and new values introduced in order 0..2.
Terms
- a(0) =1a(1) =4a(2) =16a(3) =104a(4) =913a(5) =12217a(6) =237807a(7) =6843349a(8) =292253909a(9) =18485204565
External references
- oeis: A274889