OFFSET
1,2
COMMENTS
All palindromic perfect powers are trivial members, but there are infinitely many nontrivial members.
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..867
EXAMPLE
12^2 =144, digit reversal of 144 is 441= 21^2. 12769=113^2, reversal(12769) = 96721 = 311^2.
MATHEMATICA
Join[{1}, Select[Range[11 10^5], Mod[#, 10]!=0&&GCD@@FactorInteger[#][[All, 2]]>1&&GCD@@FactorInteger[IntegerReverse[#]][[All, 2]]>1&]] (* Harvey P. Dale, Jun 01 2018 *)
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Aug 15 2005
EXTENSIONS
Corrected and extended by Joshua Zucker, May 04 2006
Description and offset edited by Chai Wah Wu, Jun 06 2016
STATUS
approved