# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a098039 Showing 1-1 of 1 %I A098039 #4 Oct 01 2013 17:58:04 %S A098039 7,23,37,47,73,809,1453,1931,2621,3571,3917,4793,7901,8819,9467,10181, %T A098039 11657,12421,12659,12781,13229,14449,17383,21739,22079,24151,26501, %U A098039 28663,30881,32749,33353,34439,38083,38501,42467,42703,43397,48091 %N A098039 Numbers p such that p = (prime(n)+ prime(n+3))/2 is prime for prime indices n=2, 3, 5... %e A098039 prime(7)+ prime(10) = 17+29. 46/2 = 23, the second term in the table. %o A098039 (PARI) g(n,m) = forprime(x=1,n,y=(prime(x)+prime(x+m)); if(y%2==0&isprime(y/2),print1(y\2","))) %K A098039 easy,nonn %O A098039 2,1 %A A098039 _Cino Hilliard_, Sep 10 2004 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE