Numbers n such that string 5,7 occurs in the base 9 representation of n but not of n+1.

Terms

a(0) =52a(1) =133a(2) =214a(3) =295a(4) =376a(5) =457a(6) =476a(7) =538a(8) =619a(9) =700a(10) =781a(11) =862a(12) =943a(13) =1024a(14) =1105a(15) =1186a(16) =1205a(17) =1267a(18) =1348a(19) =1429a(20) =1510a(21) =1591a(22) =1672a(23) =1753a(24) =1834a(25) =1915a(26) =1934a(27) =1996a(28) =2077a(29) =2158