A031213 Periods of sum of 10th powers of digits iterated until the sequence becomes periodic.

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

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