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%I #12 Jun 16 2020 03:06:54
%S 1,12,60,1260,13860,180180,277200,900900,3628800,15315300,28828800,
%T 38880000,290990700,373248000,428828400,2036934900,2477260800,
%U 3632428800,6692786100,8147739600,13335840000,15682867200,15925248000,20956320000,46849502700,61751289600,65181916800,68976230400
%N Squares of terms are the intersection of A025487 and A217584.
%C As all terms in A217584 are squares so these list the square roots.
%C Also: Numbers k such that k^2 is the least positive integer having its prime signature and d(k^4)/d(k^2) is an integer.
%H David A. Corneth, <a href="/A333969/b333969.txt">Table of n, a(n) for n = 1..3393</a>
%e 12 is in the sequence as 12^2 = 144 and 144^2 has 45 divisors and 144 has 15 divisors and 45/15 = 3 is integer and 12 is in A025487 and so is 144.
%Y Cf. A025487, A217584.
%K nonn
%O 1,2
%A _David A. Corneth_, May 30 2020
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