Indices of primes in A026007.

Terms

a(0) =2a(1) =3a(2) =8a(3) =15a(4) =18a(5) =34a(6) =106a(7) =169a(8) =404a(9) =411a(10) =421a(11) =501a(12) =504a(13) =558a(14) =586a(15) =616a(16) =822a(17) =1051a(18) =1573a(19) =1791a(20) =1894a(21) =1935a(22) =2178a(23) =2536a(24) =2823a(25) =2908a(26) =5002a(27) =5037a(28) =5383a(29) =5826