Number of nX3 1..7 arrays with every element value z a city block distance of exactly z from another element value z.
A209214
Number of nX3 1..7 arrays with every element value z a city block distance of exactly z from another element value z.
Terms
- a(0) =1a(1) =16a(2) =488a(3) =26029a(4) =1958627a(5) =201001373
External references
- oeis: A209214