Number of ordered pairs (a,b) of elements of the symmetric group S_n such that the pair a,b generates S_n.

A071605

Number of ordered pairs (a,b) of elements of the symmetric group S_n such that the pair a,b generates S_n.

Terms

    a(0) =1a(1) =3a(2) =18a(3) =216a(4) =6840a(5) =228960a(6) =15573600a(7) =994533120a(8) =85232891520

External references