Positions of prime powers p^e with p < e within A000961.

Terms

a(0) =7a(1) =11a(2) =19a(3) =28a(4) =33a(5) =45a(6) =69a(7) =71a(8) =118a(9) =153a(10) =199a(11) =341a(12) =360a(13) =605a(14) =894a(15) =1079a(16) =1881a(17) =1962a(18) =2294a(19) =3591a(20) =6060a(21) =6636a(22) =7772a(23) =12371a(24) =16229a(25) =23151a(26) =33292a(27) =43580a(28) =44126a(29) =82268