Number of vector sums of two permutations of 1,2,...,n.
A175176
Number of vector sums of two permutations of 1,2,...,n.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =201a(5) =3081a(6) =62663a(7) =1598185a(8) =49158651a(9) =1772832643a(10) =73394322615
External references
- oeis: A175176