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

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031213 Periods of sum of 10th powers of digits iterated until the sequence becomes periodic. 0
1, 17, 123, 17, 17, 123, 123, 123, 123, 1, 17, 123, 17, 123, 123, 123, 81, 81, 123, 17, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 17, 123, 123, 123, 123, 123, 81, 17, 123, 17, 123, 123, 123, 123, 123, 7, 123, 123, 123, 17, 123, 123, 123, 123 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..53.

Eric Weisstein's World of Mathematics, Digitaddition

CROSSREFS

Sequence in context: A196806 A094944 A108682 * A196145 A021003 A196313

Adjacent sequences:  A031210 A031211 A031212 * A031214 A031215 A031216

KEYWORD

nonn,base

AUTHOR

Eric W. Weisstein

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified August 21 14:11 EDT 2014. Contains 245856 sequences.