OFFSET
1,1
MATHEMATICA
Join[{8, 0}, Table[Module[{c=Floor[Surd[10^n-1, 3]]^3}, While[!IntegerQ[ Surd[Total[IntegerDigits[c]], 3]], c=(Surd[c, 3]-1)^3]; c], {n, 3, 20}]] (* Harvey P. Dale, May 28 2015 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Daniel Mondot, Oct 08 2010
EXTENSIONS
Corrected by Arkadiusz Wesolowski at the suggestion of T. D. Noe, Jun 08 2011
STATUS
approved