A031178 Periods of sum of cubes of digits iterated until the sequence becomes periodic.

1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 3, 1, 1

Offset

0,5

Links

Table of n, a(n) for n=0..99.

Eric Weisstein's World of Mathematics, Digit addition

Crossrefs

Sequence in context: A356307 A356306 A355931 * A327401 A091407 A031229

Adjacent sequences: A031175 A031176 A031177 * A031179 A031180 A031181

Keyword

nonn,base

Author

Eric W. Weisstein

Extensions

Missing a(0)=1 inserted by Sean A. Irvine, Apr 13 2020

Status

approved