Number of (n+1)X(2+1) arrays of permutations of 0..n*2-1 with each element moved a city block distance of exactly 2.
A263386
Number of (n+1)X(2+1) arrays of permutations of 0..n*2-1 with each element moved a city block distance of exactly 2.
Terms
- a(0) =4a(1) =144a(2) =1600a(3) =17376a(4) =240100a(5) =3187140a(6) =40513225a(7) =522858816a(8) =6789760000a(9) =87813119040
External references
- oeis: A263386