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A046156 Limit set for operation of repeatedly replacing a number with the sum of the cubes of its digits. 6
0, 1, 55, 133, 136, 153, 160, 217, 244, 250, 352, 370, 371, 407, 919, 1459 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Range of A165330; A165330(a(n))=a(n); A165331(a(n))=0. - Reinhard Zumkeller, Sep 17 2009

LINKS

Table of n, a(n) for n=1..16.

MATHEMATICA

lst = {}; k = 0; While[k < 1500, a = NestWhile[Plus @@ (IntegerDigits@ #^3) &, k, Unequal, All]; If[FreeQ[lst, a], AppendTo[lst, a]]; k++]; Sort@ lst (* Robert G. Wilson v, Jan 19 2006, revised Jan 03 2015 *)

Table[Nest[Total[IntegerDigits[#]^3]&, n, 30], {n, 0, 1500}]//Union (* Harvey P. Dale, Aug 04 2018 *)

CROSSREFS

Cf. A046197, A113708.

Sequence in context: A208294 A039442 A063324 * A224459 A218161 A044306

Adjacent sequences:  A046153 A046154 A046155 * A046157 A046158 A046159

KEYWORD

nonn,fini,full,base

AUTHOR

Richard C. Schroeppel

STATUS

approved

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Last modified September 22 01:18 EDT 2021. Contains 347605 sequences. (Running on oeis4.)