Least number that requires exactly n iterations of f(x) = reverse(x) - maxdigit(x) to reach zero.

Terms

a(0) =1a(1) =11a(2) =16a(3) =12a(4) =15a(5) =25a(6) =36a(7) =106a(8) =104a(9) =108a(10) =197a(11) =1009a(12) =1022a(13) =1052a(14) =1091a(15) =1073a(16) =1801a(17) =10004a(18) =10005a(19) =10051a(20) =10062a(21) =10071a(22) =10083a(23) =10081a(24) =10092a(25) =14991a(26) =19982a(27) =19991a(28) =100092a(29) =100192