Numbers n such that string 4,3 occurs in the base 10 representation of n but not of n-1.

Terms

a(0) =43a(1) =143a(2) =243a(3) =343a(4) =430a(5) =443a(6) =543a(7) =643a(8) =743a(9) =843a(10) =943a(11) =1043a(12) =1143a(13) =1243a(14) =1343a(15) =1430a(16) =1443a(17) =1543a(18) =1643a(19) =1743a(20) =1843a(21) =1943a(22) =2043a(23) =2143a(24) =2243a(25) =2343a(26) =2430a(27) =2443a(28) =2543a(29) =2643