OFFSET
1,3
COMMENTS
Equivalently, numbers that eventually reach a fixed point under "x -> sum of cubes of digits of x". - Reinhard Zumkeller, Sep 17 2009
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..1000
Eric Weisstein's World of Mathematics, Digitaddition
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Missing a(0)=0 inserted by Sean A. Irvine, Apr 14 2020
STATUS
approved