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 A115449 Numbers n such that 4*n^5 - 1 is prime. 0
 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; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE If n=96 then (4*n^5 - 1) = 32614907903 (prime). MATHEMATICA Select[Range[500], PrimeQ[4*#^5 - 1] &] (* Stefan Steinerberger, Mar 09 2006 *) PROG (PARI) for(i=1, 2000, if(isprime(4*i^5-1), print1(i, ", "))) \\ Matthew Conroy, Mar 12 2006 (PARI) for(i=1, 2000, if(isprime(4*i^5-1), print1(i, ", "))) \\ Matthew Conroy, Mar 12 2006 CROSSREFS Cf. A115104, A001912. Sequence in context: A249096 A249367 A257999 * A303851 A218542 A194452 Adjacent sequences:  A115446 A115447 A115448 * A115450 A115451 A115452 KEYWORD nonn AUTHOR Parthasarathy Nambi, Mar 08 2006 EXTENSIONS More terms from Stefan Steinerberger, Zak Seidov and Matthew Conroy, Mar 12 2006 More terms from Matthew Conroy, Mar 12 2006 STATUS approved

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Last modified April 16 05:20 EDT 2021. Contains 343030 sequences. (Running on oeis4.)