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%I #6 Jul 11 2020 19:57:06
%S 1,2,3,16,25,1296,49,262144,6561,1000000,14641,61917364224,28561,
%T 56693912375296,11390625,4294967296,6975757441,121439531096594251776,
%U 47045881
%N a(n) = n ^ phi(n-1), phi(n) = A000010(n) = Euler totient function.
%e For n = 6, a(6) = 6 ^ phi(6-1) = 6 ^ A000010(5) = 6 ^ 4 = 1296.
%t Table[n^EulerPhi[n-1],{n,20}] (* _Harvey P. Dale_, Jul 11 2020 *)
%o (PARI) a(n)=n^eulerphi(n-1) \\ _Charles R Greathouse IV_, Feb 21 2013
%K nonn
%O 1,2
%A _Jaroslav Krizek_, Aug 09 2010
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