A225322 Lucky numbers that are prime powers.

1, 9, 25, 49, 169, 289, 361, 529, 729, 841, 961, 1369, 2187, 2209, 3481, 3721, 5041, 7921, 9409, 10609, 24649, 29791, 32041, 32761, 36481, 50653, 52441, 66049, 73441, 83521, 113569, 121801, 128881, 130321, 167281, 175561, 185761, 226981, 292681, 300763, 323761

Offset: 1

Author

Alex Ratushnyak, May 05 2013

Keywords

• nonn

Comments

Intersection of A025475 and A000959.

Conjecture: the sequence is infinite.

Links

• Kevin P. Thompson, Table of n, a(n) for n = 1..1577 (terms < 10^10 with terms 1..628 from Donovan Johnson)

Crossrefs

Cf. A000959, A025475.

Cf. A031157, A031162, A057589, A118565, A128511.