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 A154877 Numbers that eventually reach the cycle 160-217-352 under "x -> sum of cubes of digits of x" (see A055012). 6
 16, 22, 61, 79, 97, 106, 115, 127, 151, 160, 172, 202, 217, 220, 229, 235, 238, 253, 271, 283, 292, 325, 328, 352, 382, 388, 445, 454, 457, 475, 511, 523, 532, 544, 547, 574, 601, 610, 709, 712, 721, 745, 754, 790, 823, 832, 838, 883, 907, 922, 970, 1006 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS All the numbers are of the form 3n+1. A165330(a(n)) = 160; Subsequence of A165336. LINKS EXAMPLE Taking 79 as an example; 7^3+9^3=1072, 1^3+0^3+7^3+2^3=352, 3^3+5^3+2^3=160, 1^3+6^3+0^3=217, 2^3+1^3+7^3=352. a(15)=229: 229 -> 2*2^3+9^3=745 -> 7^3+4^3+5^3+1=532 -> 5^3+3^3+2^3=160 -> 217 -> 352 -> 160 ... . MATHEMATICA okQ[n_]:=MemberQ[NestList[Total[IntegerDigits[#]^3]&, n, 20], 160]; Select[Range, okQ] (* Harvey P. Dale, Jun 20 2011 *) CROSSREFS Cf. A154820, A154877, A165330, A165336, A165337, A165339. Sequence in context: A303958 A304601 A165338 * A305337 A322344 A316417 Adjacent sequences:  A154874 A154875 A154876 * A154878 A154879 A154880 KEYWORD nonn,base AUTHOR Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 16 2009 EXTENSIONS Further terms added by Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 20 2009 Corrected by Reinhard Zumkeller, Sep 17 2009. Confirmed by Harvey P. Dale, Jun 20 2011 Entry revised by N. J. A. Sloane, Oct 13 2018 (merging older duplicate entry with this one). STATUS approved

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Last modified May 18 10:28 EDT 2022. Contains 353807 sequences. (Running on oeis4.)