A097158 Numbers that set a new record for the number of iterations needed to reach 0 under f(x) = reverse(x) - maxdigit(x).

1, 11, 12, 15, 25, 36, 104, 108, 197, 1009, 1022, 1052, 1073, 1801, 10004, 10005, 10051, 10062, 10071, 10081, 10092, 14991, 19982, 19991, 100092, 100191, 101973, 289101, 1000083, 1000092, 1020991, 1099791, 1999991, 10001091, 10001991

Offset

1,2

Comments

Where records occur in A097154. It is easy to find numbers that require many iterations to reach zero; e.g., 10^110+2 takes 200.

Links

Table of n, a(n) for n=1..35.

Crossrefs

Cf. A097153, A097154, A097155, A097156, A097157.

Sequence in context: A287442 A255726 A347541 * A072239 A079350 A070605

Adjacent sequences: A097155 A097156 A097157 * A097159 A097160 A097161

Keyword

base,nonn

Author

Jason Earls, Aug 01 2004

Extensions

a(33)-a(35) from Klaus Brockhaus, Aug 14 2004

Status

approved