%N Least k such that (tau(k^k)+k-1)/k=n.
%C a(n) <= 2^(n-1); if a lesser solution k exists, then it must have more than one distinct prime factor and k < n. - Chandler
%A _Robert G. Wilson v_
%E More terms from _Robert G. Wilson v_, Aug 06 2005
%E Definition corrected by Vladeta Jovovic, Sep 03 2005
%E a(30)-a(38) from _Ray Chandler_, Dec 05 2008