OFFSET
1,2
COMMENTS
14 ~ 41 = 41 - 14 = 27 = 3^3 hence 14 and 41 are in the sequence.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = k if mod ( k ~R(k)) = r^3.where R(k) is the digit reversal of k (A004086).
MATHEMATICA
pcQ[n_]:=Module[{rn=FromDigits[Reverse[IntegerDigits[n]]]}, IntegerQ[ Power[ Abs[n-rn], (3)^-1]]]; Select[Range[400], pcQ] (* Harvey P. Dale, Nov 21 2011 *)
Select[Range[400], IntegerQ[Surd[Abs[#-IntegerReverse[#]], 3]]&] (* The program uses the IntegerReverse function from Mathematica version 10 *) (* Harvey P. Dale, Mar 06 2016 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Amarnath Murthy, May 02 2001
EXTENSIONS
Corrected and extended by Erich Friedman, May 08 2001
STATUS
approved