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A065895 Which composite number is n^n ? 0

%I #7 Oct 15 2013 22:31:12

%S 0,1,17,201,2679,41834,757857,15699344,366719682,9544947488,

%T 274049557236,8606313278052

%N Which composite number is n^n ?

%e 27 is the 17th composite number: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27.

%t Table[ n^n - (PrimePi[n^n]) - 1, {n, 1, 12} ]

%Y Cf. A002808, A000720, A000312.

%K nonn

%O 1,3

%A _Labos Elemer_, Nov 28 2001

%E More terms from _Robert G. Wilson v_ and _Vladeta Jovovic_, Nov 29 2001

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)