Positions of even numbers in A024412.

Terms

a(0) =0a(1) =3a(2) =5a(3) =9a(4) =11a(5) =16a(6) =17a(7) =18a(8) =21a(9) =23a(10) =24a(11) =27a(12) =28a(13) =32a(14) =33a(15) =34a(16) =37a(17) =39a(18) =40a(19) =42a(20) =44a(21) =46a(22) =49a(23) =50a(24) =53a(25) =54a(26) =55a(27) =58a(28) =59a(29) =60