Position of n-th 2 in A030341.

Terms

a(0) =2a(1) =7a(2) =10a(3) =12a(4) =13a(5) =14a(6) =21a(7) =30a(8) =34a(9) =37a(10) =39a(11) =40a(12) =44a(13) =47a(14) =48a(15) =50a(16) =53a(17) =56a(18) =57a(19) =59a(20) =61a(21) =62a(22) =64a(23) =65a(24) =66a(25) =67a(26) =68a(27) =77a(28) =89a(29) =94