This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A124850 Primes p=n/2 such that 7n+3 and 3n+7 are primes. 1
 2, 5, 11, 17, 29, 37, 61, 67, 71, 89, 167, 191, 199, 229, 269, 277, 311, 331, 337, 347, 379, 389, 419, 431, 509, 541, 577, 587, 617, 631, 691, 709, 757, 797, 809, 821, 929, 941, 977, 991, 1069, 1091, 1117, 1129, 1217, 1277, 1279, 1289, 1291, 1367, 1439 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS CROSSREFS Cf. A089033, A089953, A124849. Sequence in context: A289250 A278049 A007491 * A156850 A156611 A143509 Adjacent sequences:  A124847 A124848 A124849 * A124851 A124852 A124853 KEYWORD nonn AUTHOR Zak Seidov, Nov 10 2006 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 7 00:45 EST 2019. Contains 329817 sequences. (Running on oeis4.)