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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A101315 Primes p such that p+2, p^2 - 2p + 2, and p^2 - 2p + 4 are all prime. 3
 3, 5, 11, 431, 1877, 2081, 3851, 9437, 10427, 11351, 12821, 14561, 20147, 26861, 30137, 30851, 37571, 38711, 38921, 40637, 46817, 59357, 73361, 116687, 120941, 125507, 127817, 138371, 144407, 153521, 173021, 177011, 178091, 178817, 185567 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 FORMULA a(n) >> n log^4 n. - Charles R Greathouse IV, Jan 14 2017 EXAMPLE a(3)=11: 11+2=13, (11-1)^2+1=101 and (11-1)^2+1+2=103 are primes. PROG (PARI) is(n)=isprime(n) && isprime(n+2) && isprime(n^2-2*n+2) && isprime(n^2-2*n+4) \\ Charles R Greathouse IV, Jan 14 2017 CROSSREFS Sequence in context: A280876 A079037 A281087 * A343738 A066541 A279728 Adjacent sequences:  A101312 A101313 A101314 * A101316 A101317 A101318 KEYWORD nonn AUTHOR Ray G. Opao, Dec 23 2004 EXTENSIONS New name from Charles R Greathouse IV, Jan 14 2017 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 May 25 06:43 EDT 2022. Contains 354049 sequences. (Running on oeis4.)