Least k such that the base-2 representation of n begins at s(k), where s=A030308.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =1a(5) =4a(6) =3a(7) =17a(8) =5a(9) =9a(10) =1a(11) =4a(12) =8a(13) =3a(14) =13a(15) =49a(16) =17a(17) =22a(18) =5a(19) =31a(20) =9a(21) =38a(22) =1a(23) =16a(24) =4a(25) =8a(26) =37a(27) =3a(28) =29a(29) =14