Least k such that the base-2 representation of n begins at s(k), where s=A030315.

Terms

a(0) =3a(1) =3a(2) =7a(3) =3a(4) =8a(5) =7a(6) =19a(7) =3a(8) =24a(9) =8a(10) =21a(11) =23a(12) =7a(13) =19a(14) =51a(15) =14a(16) =3a(17) =24a(18) =58a(19) =8a(20) =27a(21) =21a(22) =54a(23) =66a(24) =23a(25) =7a(26) =20a(27) =56a(28) =19a(29) =51