Position of n-th 2 in A030353.

Terms

a(0) =5a(1) =6a(2) =13a(3) =18a(4) =21a(5) =22a(6) =23a(7) =26a(8) =29a(9) =31a(10) =32a(11) =33a(12) =42a(13) =49a(14) =53a(15) =54a(16) =66a(17) =69a(18) =72a(19) =76a(20) =78a(21) =80a(22) =84a(23) =85a(24) =88a(25) =89a(26) =90a(27) =91a(28) =95a(29) =99