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a(n) = floor(prime(n^n)^(1/n)).
0

%I #6 Oct 26 2024 14:39:33

%S 2,2,4,6,7,9,10,11,12,13,14,16,17,18

%N a(n) = floor(prime(n^n)^(1/n)).

%t Table[Floor[Surd[Prime[n^n],n]],{n,14}] (* _Harvey P. Dale_, May 28 2023 *)

%K nonn

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Dec 03 2008

%E More terms from _Harvey P. Dale_, May 28 2023