Number of n X n 0..2 arrays with every element value z a city block distance of exactly z from another element value z.
A209468
Number of n X n 0..2 arrays with every element value z a city block distance of exactly z from another element value z.
Terms
- a(0) =1a(1) =13a(2) =2262a(3) =2497939a(4) =18325569581
External references
- oeis: A209468