Numbers n such that string 4,1 occurs in the base 9 representation of n but not of n-1.

Terms

a(0) =37a(1) =118a(2) =199a(3) =280a(4) =333a(5) =361a(6) =442a(7) =523a(8) =604a(9) =685a(10) =766a(11) =847a(12) =928a(13) =1009a(14) =1062a(15) =1090a(16) =1171a(17) =1252a(18) =1333a(19) =1414a(20) =1495a(21) =1576a(22) =1657a(23) =1738a(24) =1791a(25) =1819a(26) =1900a(27) =1981a(28) =2062a(29) =2143