Number of ordered pairs a,b of elements in the dihedral group D_2n such that the subgroup generated by the pair a,b is the entire group D_2n.

A064400

Number of ordered pairs a,b of elements in the dihedral group D_2n such that the subgroup generated by the pair a,b is the entire group D_2n.

Terms

    a(0) =3a(1) =6a(2) =18a(3) =24a(4) =60a(5) =36a(6) =126a(7) =96a(8) =162a(9) =120a(10) =330a(11) =144a(12) =468a(13) =252a(14) =360a(15) =384a(16) =816a(17) =324a(18) =1026a(19) =480a(20) =756a(21) =660a(22) =1518a(23) =576a(24) =1500a(25) =936a(26) =1458a(27) =1008a(28) =2436a(29) =720

External references