Number of nX2 1..3 arrays with every element value z a city block distance of exactly z from another element value z.
A209361
Number of nX2 1..3 arrays with every element value z a city block distance of exactly z from another element value z.
Terms
- a(0) =1a(1) =2a(2) =16a(3) =122a(4) =690a(5) =4098a(6) =24301a(7) =131984a(8) =720033a(9) =3945050a(10) =21470933a(11) =115976303a(12) =629975658a(13) =3432416744a(14) =18721854079a(15) =102389248936a(16) =560740694837
External references
- oeis: A209361