It is probably still unknown whether there are any palindromic n-th powers with more than one digit, for any n >= 5.
Table of n, a(n) for n=1..4.
a(3) = 343 = 7^3.
Sequence in context: A071686 A296742 A103097 * A071071 A195729 A303950
Adjacent sequences: A062283 A062284 A062285 * A062287 A062288 A062289
Amarnath Murthy, Jun 18 2001
Corrected by and better description from Dean Hickerson, Jun 23, 2001