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Search: id:A091513
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| A091513 |
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Indices n of Kynea primes, which are primes of the form (2^n+1)^2-2 = 4^n+2^(n+1)-1. |
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+0
4
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| 0, 1, 2, 3, 5, 8, 9, 12, 15, 17, 18, 21, 23, 27, 32, 51, 65, 87, 180, 242, 467, 491, 501, 507, 555, 591, 680, 800, 1070, 1650, 2813, 3281, 4217, 5153, 6287, 6365, 10088, 10367, 37035, 45873, 69312, 102435, 106380, 108888, 110615, 281621
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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S. Harvey, Carol and Kynea Primes.
Eric Weisstein's World of Mathematics, Kynea Number
Eric Weisstein's World of Mathematics, Integer Sequence Primes
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MATHEMATICA
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lst={}; Do[p=4^n+2^(n+1)-1; If[PrimeQ[p], AppendTo[lst, n]], {n, 0, 7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 27 2009]
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CROSSREFS
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Cf. A091514.
Sequence in context: A095952 A025033 A122933 this_sequence A060138 A139487 A162586
Adjacent sequences: A091510 A091511 A091512 this_sequence A091514 A091515 A091516
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KEYWORD
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nonn,hard
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com), Jan 17, 2004
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EXTENSIONS
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a(41) from Eric Weisstein (eric(AT)weisstein.com), Feb 27, 2004.
a(42) to a(44) from Eric Weisstein (eric(AT)weisstein.com), Jun 05, 2004
Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 15, 2004
a(46) from Cletus Emmanuel (cemmanu(AT)yahoo.com), Oct 07 2005
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