This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A075280 Interprimes which are of the form s*prime, s=5. 0
 15, 205, 515, 1465, 1795, 1895, 2105, 3265, 3505, 3665, 4105, 4415, 4535, 4555, 4685, 5045, 6185, 7115, 7835, 8135, 8185, 9655, 9865, 10085, 10645, 11015, 11405, 12085, 12295, 12385, 13235, 14395, 16045, 16355, 16735, 17065 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Interprimes which are of the form s*prime are in A075277-A075296 (s = 2-21). Case s = 1 is impossible. LINKS EXAMPLE 205 is an interprime and 205/5 = 41 is prime. MATHEMATICA s=5; Select[Table[(Prime[n+1]+Prime[n])/2, {n, 2, 1000}], PrimeQ[ #/s]&] CROSSREFS Cf. A075277-A075296. Sequence in context: A216465 A215903 A070968 * A093747 A061637 A231546 Adjacent sequences:  A075277 A075278 A075279 * A075281 A075282 A075283 KEYWORD easy,nonn AUTHOR Zak Seidov, Sep 12 2002 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 September 17 06:41 EDT 2019. Contains 327119 sequences. (Running on oeis4.)