Number of nX7 1..3 arrays with no element with value z exactly a city block distance of z from another element with value z.
A209373
Number of nX7 1..3 arrays with no element with value z exactly a city block distance of z from another element with value z.
Terms
- a(0) =185a(1) =722a(2) =5460a(3) =54450a(4) =510378a(5) =4657352a(6) =43249360a(7) =402144800a(8) =3725851316a(9) =34509848328a(10) =320002445430
External references
- oeis: A209373