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 A115782 #5 Mar 30 2012 17:26:20
%S A115782 5,11,13,29,31,37,71,73,79,97,431,433,439,457,499,1061,1063,1069,1087,
%T A115782 1129,1489,56501,56503,56509,56527,56569,56929,57559,166841,166843,
%U A115782 166849,166867,166909,167269,167899,223339,5020061,5020063,5020069
%N A115782 Primes generated by pairwise averages of terms in A115760.
%C A115782 Also primes arising from A103828. - _N. J. A. Sloane_, Apr 28 2007
%e A115782 The pairwise averages of first three terms in A115760, {3,7,19} produce the set of primes {5,11,13}.
%Y A115782 Cf. A113832, A113875, A115760.
%K A115782 nonn
%O A115782 1,1
%A A115782 _Zak Seidov_, Jan 30 2006