Number of nX6 0..2 arrays with every element value z a city block distance of exactly z from another element value z.

A209474

Number of nX6 0..2 arrays with every element value z a city block distance of exactly z from another element value z.

Terms

    a(0) =46a(1) =27989a(2) =15763699a(3) =6446131005

External references