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A089622 a(n) = n^n + n-th prime. 1

%I #4 Oct 01 2013 17:57:55

%S 3,7,32,263,3136,46669,823560,16777235,387420512,10000000029,

%T 285311670642,8916100448293,302875106592294,11112006825558059,

%U 437893890380859422,18446744073709551669,827240261886336764236

%N a(n) = n^n + n-th prime.

%C Sum of reciprocals = 0.51158433914035778198539668456352160045247631333773..

%o (PARI) primeppwr2(n) = { sr=0; for(x=1,n, y=x^x+prime(x); print1(y","); sr+=1./y; ); print(); print(sr) }

%K easy,nonn

%O 1,1

%A _Cino Hilliard_, Dec 31 2003

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Last modified April 18 11:52 EDT 2024. Contains 371779 sequences. (Running on oeis4.)