%I #17 Nov 24 2021 04:11:17
%S 1,9,25,49,169,289,361,529,729,841,961,1369,2187,2209,3481,3721,5041,
%T 7921,9409,10609,24649,29791,32041,32761,36481,50653,52441,66049,
%U 73441,83521,113569,121801,128881,130321,167281,175561,185761,226981,292681,300763,323761
%N Lucky numbers that are prime powers.
%C Intersection of A025475 and A000959.
%C Conjecture: the sequence is infinite.
%H Kevin P. Thompson, <a href="/A225322/b225322.txt">Table of n, a(n) for n = 1..1577</a> (terms < 10^10 with terms 1..628 from Donovan Johnson)
%Y Cf. A000959, A025475.
%Y Cf. A031157, A031162, A057589, A118565, A128511.
%K nonn
%O 1,2
%A _Alex Ratushnyak_, May 05 2013