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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A157323 Primes in A023037 0 3, 13, 109912203092239643840221, 568972471024107865287021434301977158534824481 (list; graph; refs; listen; history; text; internal format) OFFSET 1,1 LINKS Table of n, a(n) for n=1..4. MATHEMATICA lst={}; Do[s=0; Do[s+=n^a, {a, 0, n-1}]; If[PrimeQ[s], AppendTo[lst, s]], {n, 0, 2*5!}]; lst CROSSREFS Sequence in context: A048756 A174211 A264611 * A016549 A147584 A163357 Adjacent sequences: A157320 A157321 A157322 * A157324 A157325 A157326 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, Feb 27 2009 STATUS approved

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Last modified August 29 21:13 EDT 2024. Contains 375518 sequences. (Running on oeis4.)