Numbers n such that string 5,8 occurs in the base 10 representation of n but not of n-1.

Terms

a(0) =58a(1) =158a(2) =258a(3) =358a(4) =458a(5) =558a(6) =580a(7) =658a(8) =758a(9) =858a(10) =958a(11) =1058a(12) =1158a(13) =1258a(14) =1358a(15) =1458a(16) =1558a(17) =1580a(18) =1658a(19) =1758a(20) =1858a(21) =1958a(22) =2058a(23) =2158a(24) =2258a(25) =2358a(26) =2458a(27) =2558a(28) =2580a(29) =2658