A031213 - OEIS

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A031213

Periods of sum of 10th powers of digits iterated until the sequence becomes periodic.

1

1, 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

0,3

LINKS

Table of n, a(n) for n=0..54.

Eric Weisstein's World of Mathematics, Digitaddition

CROSSREFS

Sequence in context: A094944 A274325 A108682 * A196145 A021003 A196313

Adjacent sequences: A031210 A031211 A031212 * A031214 A031215 A031216

KEYWORD

nonn,base

AUTHOR

Eric W. Weisstein

EXTENSIONS

Missing a(0)=1 inserted by Sean A. Irvine, Apr 15 2020

STATUS

approved