Number of nX2 0..7 arrays with every element value z a city block distance of exactly z from another element value z.
A209217
Number of nX2 0..7 arrays with every element value z a city block distance of exactly z from another element value z.
Terms
- a(0) =2a(1) =13a(2) =115a(3) =1468a(4) =22738a(5) =415695a(6) =8685016a(7) =187123430
External references
- oeis: A209217