Position of n-th 2 in A031100.

Terms

a(0) =8a(1) =15a(2) =17a(3) =19a(4) =21a(5) =26a(6) =44a(7) =62a(8) =82a(9) =105a(10) =108a(11) =109a(12) =111a(13) =114a(14) =117a(15) =136a(16) =163a(17) =190a(18) =200a(19) =203a(20) =206a(21) =209a(22) =212a(23) =215a(24) =217a(25) =218a(26) =221a(27) =224a(28) =227a(29) =228