This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A075290 #6 Mar 30 2012 17:26:03
%S A075290 30,45,105,165,195,465,615,645,705,885,915,1095,1695,2085,2685,2955,
%T A075290 2985,3165,3345,3495,3615,3945,4065,4155,4755,5055,5235,5505,6645,
%U A075290 6735,8445,8655,8805,8985,9465,9885,9915,10155,10245,10635,10785,11085
%N A075290 Interprimes which are of the form s*prime, s=15.
%C A075290 Interprimes of the form s*prime are in A075277-A075296 ( s = 2 - 21 ). Case s=1 is impossible.
%e A075290 105 is an interprime and 105/15 = 7 is prime.
%t A075290 s=15; Select[Table[(Prime[n+1]+Prime[n])/2, {n, 2, 4000}], PrimeQ[ #/s]&]
%Y A075290 Cf. A075277-A075296.
%K A075290 easy,nonn
%O A075290 1,1
%A A075290 _Zak Seidov_, Sep 12 2002