Numbers k such that string 2,3 occurs in the base 9 representation of k but not of k-1.

Terms

a(0) =21a(1) =102a(2) =183a(3) =189a(4) =264a(5) =345a(6) =426a(7) =507a(8) =588a(9) =669a(10) =750a(11) =831a(12) =912a(13) =918a(14) =993a(15) =1074a(16) =1155a(17) =1236a(18) =1317a(19) =1398a(20) =1479a(21) =1560a(22) =1641a(23) =1647a(24) =1701a(25) =1803a(26) =1884a(27) =1965a(28) =2046a(29) =2127