Numbers n such that string 0,5 occurs in the base 10 representation of n but not of n+1.

Terms

a(0) =105a(1) =205a(2) =305a(3) =405a(4) =505a(5) =605a(6) =705a(7) =805a(8) =905a(9) =1005a(10) =1059a(11) =1105a(12) =1205a(13) =1305a(14) =1405a(15) =1505a(16) =1605a(17) =1705a(18) =1805a(19) =1905a(20) =2005a(21) =2059a(22) =2105a(23) =2205a(24) =2305a(25) =2405a(26) =2505a(27) =2605a(28) =2705a(29) =2805