Numbers k such that string 8,3 occurs in the base 10 representation of k but not of k+1.

Terms

a(0) =83a(1) =183a(2) =283a(3) =383a(4) =483a(5) =583a(6) =683a(7) =783a(8) =839a(9) =883a(10) =983a(11) =1083a(12) =1183a(13) =1283a(14) =1383a(15) =1483a(16) =1583a(17) =1683a(18) =1783a(19) =1839a(20) =1883a(21) =1983a(22) =2083a(23) =2183a(24) =2283a(25) =2383a(26) =2483a(27) =2583a(28) =2683a(29) =2783