login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A097158 Numbers that set a new record for iterations needed to reach 0 under f(x) = reverse(x) - maxdigit(x). 5
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Where records occur in A097154. It is easy to find numbers that require a lot of 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: A255725 A287442 A255726 * A072239 A079350 A070605

Adjacent sequences:  A097155 A097156 A097157 * A097159 A097160 A097161

KEYWORD

base,nonn

AUTHOR

Jason Earls, Aug 01 2004

EXTENSIONS

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

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 16 23:49 EDT 2019. Contains 325092 sequences. (Running on oeis4.)