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Search: id:A115349
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| A115349 |
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Numbers n such that (4*n^5 + 1) is prime. |
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+0
2
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| 1, 12, 15, 19, 27, 40, 49, 57, 60, 90, 93, 102, 132, 133, 147, 148, 153, 177, 190, 219, 240, 249, 258, 265, 274, 277, 280, 294, 313, 324, 337, 342, 363, 382, 394, 435, 448, 453, 462, 483, 489, 502, 522, 534, 538, 550, 580, 588, 609, 613, 634, 643, 648, 649
(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=90 then (4*n^5 + 1) = 23619600001 (prime).
If n=133 then (4*133^5 + 1) = 166463183573 (which is prime)
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MATHEMATICA
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Do[If[PrimeQ[4*n^5 + 1], Print[n]], {n, 0, 1000}]
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CROSSREFS
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Cf. A115104, A001912.
Sequence in context: A114443 A101171 A120169 this_sequence A117815 A050696 A144266
Adjacent sequences: A115346 A115347 A115348 this_sequence A115350 A115351 A115352
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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 07 2006
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EXTENSIONS
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More terms from Craig Baribault (csb166(AT)psu.edu), Mar 14 2006 and Jessica M. Cornwall (jmc510(AT)psu.edu), Mar 22 2006
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