The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons 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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A163426 Primes of the form ((p+1)/2)^3 + ((p-1)/2), p is prime. 6
 29, 67, 349, 1009, 3389, 4111, 9281, 19709, 46691, 132701, 140659, 166429, 658589, 884831, 1000099, 1405039, 1520989, 1601729, 1728119, 2146817, 2460509, 2685757, 4574461, 7078079, 7880797, 10077911, 14887181, 23149409, 23393941, 27000299 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS G. C. Greubel, Table of n, a(n) for n = 1..1500 EXAMPLE ((5+1)/2)^3 + ((5-1)/2) = 27 + 2 = 29; ((7+1)/2)^3 + ((7-1)/2) = 64 + 3 = 67. MATHEMATICA f[n_]:=((p+1)/2)^3+((p-1)/2); lst={}; Do[p=Prime[n]; If[PrimeQ[f[p]], AppendTo[lst, f[p]]], {n, 6!}]; lst CROSSREFS Cf. A162652, A163418, A163419, A163420, A163421, A163422, A163424, A163425. Sequence in context: A141875 A294615 A182332 * A344043 A165945 A226892 Adjacent sequences:  A163423 A163424 A163425 * A163427 A163428 A163429 KEYWORD nonn,easy AUTHOR Vladimir Joseph Stephan Orlovsky, Jul 27 2009 EXTENSIONS Checked by Charles R Greathouse IV, Aug 11 2009 STATUS approved

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

Last modified December 1 22:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)