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 A132811 #7 Sep 13 2013 17:24:13 %S A132811 4,5,9,79,12,17,30,261,30,49,23,71,51,29,31,37,39,125,56,95,52,173, %T A132811 133,157,113,353,70,347,89,111,139,179,187,281,124,137,95,347,100,153, %U A132811 105,491,273,185,177,377,199,599,1032,149,274,277,200,485,251,155,315,713 %N A132811 Arithmetic mean of the n primes starting at A132809(n), summed in A132810(n). %F A132811 a(n)=A132810(n)/n. - _R. J. Mathar_, Nov 27 2007 %e A132811 a(5)=79, which is the arithmetic mean 395/5 of the n=5 primes 71=A132809(n), 73, 79, 83 and 89, which add to A132810(n)=395. %Y A132811 Cf. A132809, A132810. %K A132811 easy,nonn %O A132811 2,1 %A A132811 _Enoch Haga_, Sep 01 2007 %E A132811 Edited by _R. J. Mathar_, Nov 27 2007