A075287 Interprimes which are of the form s*prime, s=12.

60, 228, 348, 636, 1668, 1788, 1884, 2148, 2364, 2724, 2892, 3252, 3372, 3684, 4236, 4548, 4668, 5316, 6252, 6684, 6828, 7212, 8292, 8628, 9012, 9708, 10068, 10308, 11892, 11964, 12108, 12252, 12396, 12612, 13836, 14676, 15324, 15396, 15564

Offset

1,1

Comments

Interprimes of the form s*prime are in A075277-A075296 ( s = 2 - 21 ). Case s=1 is impossible.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

348 is an interprime and 348/12 = 29 is prime.

Mathematica

s=12; Select[Table[(Prime[n+1]+Prime[n])/2, {n, 2, 4000}], PrimeQ[ #/s]&]
Select[Mean/@Partition[Prime[Range[2, 1900]], 2, 1], PrimeQ[#/12]&] (* Harvey P. Dale, May 08 2012 *)

Crossrefs

Cf. A075277-A075296.

Sequence in context: A224335 A068628 A256985 * A277990 A103741 A140873

Adjacent sequences: A075284 A075285 A075286 * A075288 A075289 A075290

Keyword

easy,nonn

Author

Zak Seidov, Sep 12 2002

Status

approved