Position of prime(n)# in A025487.

Terms

a(0) =1a(1) =2a(2) =4a(3) =9a(4) =22a(5) =54a(6) =114a(7) =246a(8) =488a(9) =948a(10) =1809a(11) =3327a(12) =6020a(13) =10624a(14) =18246a(15) =30726a(16) =51148a(17) =84074a(18) =135598a(19) =216398a(20) =340886a(21) =529051a(22) =814237a(23) =1240172a(24) =1874464a(25) =2817289a(26) =4195918a(27) =6186286a(28) =9049492a(29) =13121704