Numbers k such that string 7,6 occurs in the base 8 representation of k but not of k-1.

Terms

a(0) =62a(1) =126a(2) =190a(3) =254a(4) =318a(5) =382a(6) =446a(7) =496a(8) =510a(9) =574a(10) =638a(11) =702a(12) =766a(13) =830a(14) =894a(15) =958a(16) =1008a(17) =1022a(18) =1086a(19) =1150a(20) =1214a(21) =1278a(22) =1342a(23) =1406a(24) =1470a(25) =1520a(26) =1534a(27) =1598a(28) =1662a(29) =1726