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A154878 Numbers whose trajectory under iteration of sum of cubes of digits eventually turns out to be 370 0
7, 19, 34, 37, 43, 58, 67, 70, 85, 88, 91, 109, 118, 124, 139, 142, 145, 148, 154, 157, 166, 169, 175, 178, 181, 184, 187, 190, 193, 196 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All the numbers are of the form 3n+1. The iteration halts at 370 because 370 itself is equal to the sum of its digits cube.

LINKS

Table of n, a(n) for n=1..30.

EXAMPLE

Taking 34 as example, 3^3+4^3=91, 9^3+1=730, 7^3+3^3+0^3=370

CROSSREFS

Sequence in context: A147465 A053591 A165333 * A124270 A298565 A068678

Adjacent sequences:  A154875 A154876 A154877 * A154879 A154880 A154881

KEYWORD

nonn,base

AUTHOR

Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 16 2009

STATUS

approved

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Last modified April 24 10:24 EDT 2019. Contains 322422 sequences. (Running on oeis4.)