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A031212 Periods of sum of 9th powers of digits iterated until the sequence becomes periodic. 0
1, 30, 93, 1, 19, 80, 4, 30, 80, 1, 30, 93, 4, 10, 80, 24, 30, 80, 28, 30, 93, 8, 30, 80, 28, 19, 93, 8, 30, 93, 4, 30, 80, 8, 30, 93, 8, 10, 93, 1, 10, 80, 8, 10, 93, 28, 30, 80, 28, 19, 80, 28, 30, 93, 8, 30, 93, 8, 30, 80, 24, 19, 93, 28, 30, 80, 4, 30, 80, 4, 30 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..70.

Eric Weisstein's World of Mathematics, Digitaddition

CROSSREFS

Sequence in context: A042774 A042776 A042778 * A165133 A044217 A044598

Adjacent sequences:  A031209 A031210 A031211 * A031213 A031214 A031215

KEYWORD

nonn,base

AUTHOR

Eric W. Weisstein

STATUS

approved

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Last modified November 21 22:35 EST 2019. Contains 329383 sequences. (Running on oeis4.)