A118895 Numbers n with property that both n and its digit reversal are perfect powers (i.e., in A001597).

1, 4, 8, 9, 100, 121, 144, 169, 343, 400, 441, 484, 676, 900, 961, 1000, 1089, 1331, 8000, 9801, 10000, 10201, 10404, 10609, 12100, 12321, 12544, 12769, 14400, 14641, 14884, 16900, 40000, 40401, 40804, 44100, 44521, 44944, 48400, 48841, 67600

Offset

1,2

Comments

An alternate version of A110811, which doesn't include the terms with trailing zeros.

Links

Table of n, a(n) for n=1..41.

Example

100 is in the sequence because 100 and 001 = 1 are both perfect powers;
44521 and 12544 are both in the sequence because both are perfect powers, 221^2 and 112^2.

Crossrefs

This sequence is a subset of both A115656 and A001597 and contains A110811.

Cf. A118715.

Sequence in context: A083807 A098128 A217700 * A327654 A110811 A226035

Adjacent sequences: A118892 A118893 A118894 * A118896 A118897 A118898

Keyword

base,easy,nonn

Author

Joshua Zucker, May 04 2006

Extensions

Edited by N. J. A. Sloane, Oct 11 2008

Status

approved