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Search: id:A161473
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| A161473 |
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Primes of the form k^(k+1)+(k+1)^k. |
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+0
1
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| 3, 17, 14612087592038378751152858509524512533536096028044190178822935218486730194880516\ 808459166772134240378240755073828170296740373082348622309614668344831750401
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The associated k are in A073499. [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 12 2009]
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FORMULA
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A051442 INTERSECT A000040. [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 12 2009]
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EXAMPLE
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2^1+1^2=3. 2^3+3^2=17.
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MATHEMATICA
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lst={}; Do[p=n^(n+1)+(n+1)^n; If[PrimeQ[p], AppendTo[lst, p]], {n, 2*5!}]; lst
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CROSSREFS
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Sequence in context: A126579 A051710 A162713 this_sequence A082056 A082057 A161687
Adjacent sequences: A161470 A161471 A161472 this_sequence A161474 A161475 A161476
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KEYWORD
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nonn,bref
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 10 2009
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EXTENSIONS
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Definition simplified by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 12 2009
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