%I #3 Mar 30 2012 18:52:27
%S 7,41,43,47,53,83,97,107,157,167,211,251,293,353,367,401,617,683,727,
%T 839,857,859,953,1109,1117,1277,1297,1381,1429,1481,1483,1553,1597,
%U 1867,1951,1999,2087,2213,2243,2297,2389,2423,2447,2473,2657,2659,2671,2719
%N Primes of the form (p(n)+p(n+1)+p(n+2))/7, where p(n)=n-th prime.
%e If n=6, then (p(6)+p(6+1)+p(6+2))/7=(13+17+33)/7=7=a(1).
%e If n=24, then (p(24)+p(24+1)+p(24+2))/7=(89+97+101)/7=41=a(2).
%e If n=25, then (p(25)+p(25+1)+p(25+2))/7=(97+101+103)/7=43=a(3).
%e If n=30, then (p(30)+p(30+1)+p(30+2))/7=(113+127+131)/7=53=a(4).
%e If n=43, then (p(43)+p(43+1)+p(43+2))/7=(191+193+197)/7=83=a(5).
%e If n=48, then (p(48)+p(48+1)+p(48+2))/7=(223+227+229)/7=97=a(6).
%e If n=53, then (p(53)+p(53+1)+p(53+2))/7=(241+251+257)/7=107=a(7), etc.
%Y Cf. A000040.
%K nonn
%O 1,1
%A _Juri-Stepan Gerasimov_, Oct 08 2008
%E Corrected and extended by _R. J. Mathar_, Oct 10 2008