Prime values of pi(n) that divide n.

Terms

a(0) =2a(1) =3a(2) =11a(3) =67a(4) =71a(5) =439a(6) =1051a(7) =6469a(8) =40087a(9) =100361a(10) =100363a(11) =251737a(12) =251761a(13) =637319a(14) =637327a(15) =4124459a(16) =10553513a(17) =10553551a(18) =27067277a(19) =69709733a(20) =179993171a(21) =465769817a(22) =3140421769a(23) =8179002109a(24) =8179002133a(25) =55762149029a(26) =55762149071a(27) =382465573489