Least k such that base 8 representation of n begins at s(k), where s=A031057.

Terms

a(0) =1a(1) =13a(2) =2a(3) =29a(4) =3a(5) =45a(6) =4a(7) =61a(8) =5a(9) =14a(10) =1a(11) =30a(12) =9a(13) =46a(14) =11a(15) =157a(16) =13a(17) =181a(18) =15a(19) =205a(20) =17a(21) =229a(22) =19a(23) =253a(24) =8a(25) =16a(26) =23a(27) =32a(28) =2a(29) =48