Position of n-th odd prime in A026417.

Terms

a(0) =2a(1) =4a(2) =6a(3) =10a(4) =11a(5) =14a(6) =15a(7) =17a(8) =20a(9) =21a(10) =23a(11) =25a(12) =26a(13) =28a(14) =30a(15) =32a(16) =33a(17) =35a(18) =36a(19) =37a(20) =39a(21) =42a(22) =44a(23) =46a(24) =47a(25) =48a(26) =51a(27) =53a(28) =54a(29) =59