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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

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Last modified November 28 19:08 EST 2014. Contains 250399 sequences.