%I
%S 8,25,1,4,4,0,1,1,16,2187,16,4,36,0,1,9,8,9,8,16,4,27,4,1,100,1,9,4,
%T 196,6859,1,4,16,0,1,64,27,1331,25,9,8,0,441,81,4,243,81,1,32,0,49,
%U 144,676,27,9,8,64,0,841,4,64,0,1,36,16,0,1089
%N Smallest perfect power b^e such that b^e+n is also a perfect power, or 0 if no such perfect power exists.
%C a(A074981(n)) = 0.
%F a(n) = A074954(n)n, if A074954(n)>0; a(n)=0, if A074954(n)=0.
%Y Cf. A074954, A001597, A076444, A023056.
%K nonn
%O 0,1
%A _Max Alekseyev_, Feb 22 2005
