Indices of primes in A022629.

Terms

a(0) =2a(1) =3a(2) =4a(3) =7a(4) =12a(5) =39a(6) =49a(7) =56a(8) =76a(9) =91a(10) =216a(11) =221a(12) =235a(13) =272a(14) =277a(15) =331a(16) =345a(17) =362a(18) =385a(19) =655a(20) =686a(21) =749a(22) =1023a(23) =1591a(24) =1742a(25) =1825a(26) =1836a(27) =1911a(28) =2179a(29) =2511