Index of 2^n within the sequence of the numbers of the form 2^i*6^j.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =9a(6) =12a(7) =15a(8) =19a(9) =23a(10) =27a(11) =32a(12) =37a(13) =43a(14) =49a(15) =55a(16) =62a(17) =69a(18) =76a(19) =84a(20) =92a(21) =101a(22) =110a(23) =119a(24) =129a(25) =139a(26) =150a(27) =161a(28) =172a(29) =184