Index of primorial(n) in A090958.

Terms

a(0) =2a(1) =4a(2) =12a(3) =41a(4) =173a(5) =679a(6) =2806a(7) =11221a(8) =46200a(9) =195762a(10) =797388a(11) =3338052a(12) =13821332a(13) =56256665a(14) =230808795