Sum of the n-th primorial and the n-th compositorial number.

Terms

a(0) =2a(1) =3a(2) =7a(3) =10a(4) =34a(5) =54a(6) =234a(7) =402a(8) =1938a(9) =17490a(10) =19590a(11) =209670a(12) =237390a(13) =2933070a(14) =43575630a(15) =696759630a(16) =697240110a(17) =12541643310a(18) =12550832490a(19) =250832355690