%I

%S 1,3,8,28,93,425,2151,14016

%N Number of orbits of Sym(n)^2 under action of Iso_1*(n).

%D Bogaerts, Mathieu; Dukes, Peter. Semidefinite programming for permutation codes. Discrete Math. 326 (2014), 34--43. MR3188985.

%F Proposition 3.3 of Bogaerts et al. gives an explicit formula.

%Y Cf. A241584, A110143.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, May 12 2014