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Search: id:A099499
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| 17, 162287, 2486784401, 83695120256591, 84721522804414816904952398305908708011513455440403306207160333176150520399
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The next term a(6)=883^884-884^883 has 2605 decimal digits and is too large to include here.
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EXAMPLE
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a(2)=162287 because A007925(A072179(2))=6^7-7^6=162287 is prime.
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MATHEMATICA
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lst={}; Do[m=n+1; q=n^m-m^n; If[PrimeQ[q], AppendTo[lst, q]], {n, 0, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 23 2009]
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CROSSREFS
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Cf. A007925 n^(n+1)-(n+1)^n, A072179 n^(n+1)-(n+1)^n is prime, A099497 n^(n+1)-(n+1)^n is a semiprime, A099495 semiprimes of the form n^(n+1)-(n+1)^n.
Sequence in context: A078351 A046883 A046884 this_sequence A051157 A130653 A125039
Adjacent sequences: A099496 A099497 A099498 this_sequence A099500 A099501 A099502
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KEYWORD
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nonn
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AUTHOR
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Hugo Pfoertner (hugo(AT)pfoertner.org), Oct 19 2004
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