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Search: id:A115449
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| A115449 |
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Numbers n such that 4*n^5 - 1 is prime. |
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+0
1
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| 1, 2, 3, 8, 12, 23, 27, 42, 68, 75, 86, 96, 113, 117, 125, 135, 140, 146, 168, 182, 185, 188, 191, 198, 233, 245, 255, 267, 281, 287, 297, 306, 311, 318, 327, 360, 362, 366, 377, 390, 392, 395, 408, 416, 423, 432, 447, 456, 465, 486, 488, 497, 516, 531, 555
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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If n=96 then (4*n^5 - 1) = 32614907903 (prime).
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MATHEMATICA
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Select[Range[500], PrimeQ[4*#^5 - 1] &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Mar 09 2006
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PROGRAM
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(PARI) for(i=1, 2000, if(isprime(4*i^5-1), print1(i, ", "))) - Matthew Conroy (list1(AT)madandmoonly.com), Mar 12 2006
(PARI) for(i=1, 2000, if(isprime(4*i^5-1), print1(i, ", "))) - Matthew Conroy Mar 12 2006
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CROSSREFS
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Cf. A115104, A001912.
Sequence in context: A042583 A128839 A002958 this_sequence A079980 A025080 A024468
Adjacent sequences: A115446 A115447 A115448 this_sequence A115450 A115451 A115452
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 08 2006
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Zak Seidov (zakseidov(AT)yahoo.com) and Matthew Conroy (list1(AT)madandmoonly.com), Mar 12 2006
More terms from Matthew Conroy Mar 12 2006
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