A118715 Numbers n such that the digital reversal of n is a perfect power (A001597).

0, 1, 4, 8, 9, 10, 18, 23, 40, 46, 52, 61, 63, 72, 80, 90, 94, 100, 121, 144, 148, 163, 169, 180, 215, 230, 342, 343, 400, 423, 441, 460, 484, 487, 520, 521, 522, 526, 610, 612, 630, 652, 675, 676, 691, 720, 800, 821, 900, 925, 927, 940, 961, 982, 1000, 1042, 1062

Offset: 1

Author

Giovanni Teofilatto, May 21 2006

Keywords

• base
• easy
• nonn
• less

Examples

			63 is a member of the sequence since its digital reversal, 36=6^2, is the ninth perfect power.
		

Crossrefs

Cf. A001597.

Programs

Mathematica

fQ[n_] := Block[{rid = FromDigits@ Reverse@ IntegerDigits@n}, rid == 0 || rid == 1 || GCD @@ Last /@ FactorInteger@ rid > 1];
Select[ Range[0, 1088], fQ@# &] (* Robert G. Wilson v, May 22 2006 *)

Extensions

Edited and extended by Robert G. Wilson v, May 22 2006