Numbers k such that string 1,1 occurs in the base 6 representation of k but not of k-1.

Terms

a(0) =7a(1) =42a(2) =79a(3) =115a(4) =151a(5) =187a(6) =223a(7) =252a(8) =295a(9) =331a(10) =367a(11) =403a(12) =439a(13) =474a(14) =511a(15) =547a(16) =583a(17) =619a(18) =655a(19) =690a(20) =727a(21) =763a(22) =799a(23) =835a(24) =871a(25) =906a(26) =943a(27) =979a(28) =1015a(29) =1051