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Search: id:A050415
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| A050415 |
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Primes of the form 2^n-3. |
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+0
8
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| 5, 13, 29, 61, 509, 1021, 4093, 16381, 1048573, 4194301, 16777213, 536870909, 19807040628566084398385987581, 83076749736557242056487941267521533, 5316911983139663491615228241121378301
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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if p = 2^n-3 is in this sequence, then p*2^(n-1) is abundant with abundance 2. - Claude Morin (claude.morin4(AT)libertysurf.fr), Feb 01 2007
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MATHEMATICA
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lst={}; Do[p=2^n-3; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 5*5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 27 2009]
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CROSSREFS
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Cf. A045768, A050414.
Sequence in context: A036982 A029580 A113914 this_sequence A099970 A073857 A124698
Adjacent sequences: A050412 A050413 A050414 this_sequence A050416 A050417 A050418
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KEYWORD
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nonn
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AUTHOR
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Jud McCranie (j.mccranie(AT)comcast.net), Dec 22 1999
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