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%I #11 Dec 09 2022 16:05:25
%S 0,1,1,4,1,1,9,8,1,1,16,1,1,1,32,27,1,1,25,1,1,1,1,128,1,1,1,36,1,1,1,
%T 1,64,1,1,1,1,1,1,1,1,2048,243,1,49,1,1,1,1,1,1,1,1,8192,1,1,1,1,1,1,
%U 1,1,1,1,1,1,1,1,125,1,64,1,1,1,1,1,1,1,131072,1,1,1,1,1,1,1,2187,1,1,1,1
%N Power base and exponent of n-th prime-power exchanged.
%F a(n) = A025474(n)^A025473(n) while A025473(n)^A025474(n) = A000961(n);
%F a(n) = 1 iff A000961(n) is prime.
%Y Cf. A000961, A025473, A025474.
%K nonn
%O 1,4
%A _Reinhard Zumkeller_, May 26 2003
%E a(71) and following corrected by _Georg Fischer_, Dec 09 2022
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