Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #30 Jun 09 2022 21:53:08
%S 64,729,15625,46656,117649,1000000,1771561,2985984,4826809,7529536,
%T 11390625,24137569,34012224,47045881,64000000,85766121,113379904,
%U 148035889,191102976,268435456,308915776,481890304,594823321,729000000,887503681,1291467969,1544804416,1838265625
%N Numbers m equal to the product of all of their integral proper roots (defined as numbers k in the range 1 < k < m such that k^j = m for some j).
%C Numbers of the form a^b where a is a number that is not a perfect power and b is a perfect number (equal to the sum of its divisors). In other words, A007916^A000396.
%e 64 is a term because its roots are 2, 4, and 8, and 2*4*8 = 64.
%Y Cf. A000396, A007916.
%K nonn
%O 1,1
%A _J. Lowell_, Apr 13 2014
%E More terms from _Jinyuan Wang_, Jun 19 2021