The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A180742 Numbers n such that n^7-n^5+1 is prime. 1
 2, 4, 7, 9, 14, 20, 22, 30, 35, 39, 45, 51, 56, 57, 70, 75, 79, 87, 89, 92, 104, 110, 111, 115, 121, 122, 127, 160, 164, 176, 195, 210, 211, 222, 232, 237, 246, 255, 257, 294, 301, 306, 315, 336, 356, 360, 372, 375, 382, 406, 412, 429, 444, 445, 462 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[10000], PrimeQ[#^7-#^5+1]&] (* Vincenzo Librandi, Jun 21 2012 *) PROG (Magma) [n: n in [0..1000]|IsPrime(n^7-n^5+1)] (PARI) is(n)=isprime(n^7-n^5+1) \\ Charles R Greathouse IV, Jun 13 2017 CROSSREFS Sequence in context: A100486 A139533 A227116 * A039904 A115162 A278977 Adjacent sequences:  A180739 A180740 A180741 * A180743 A180744 A180745 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Jan 22 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 26 13:27 EST 2022. Contains 358362 sequences. (Running on oeis4.)