Position of n-th 2 in A030496.

Terms

a(0) =2a(1) =5a(2) =7a(3) =11a(4) =12a(5) =15a(6) =20a(7) =22a(8) =26a(9) =31a(10) =33a(11) =37a(12) =43a(13) =46a(14) =50a(15) =55a(16) =57a(17) =61a(18) =67a(19) =70a(20) =72a(21) =76a(22) =80a(23) =84a(24) =88a(25) =92a(26) =99a(27) =102a(28) =107a(29) =110