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A225322 Lucky numbers that are prime powers. 1

%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

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)