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 A122480 #4 Mar 30 2012 18:40:03 %S A122480 0,0,0,0,3,0,0,0,4,0,0,4,0,0,4,0,7,4,0,0,0,4,12,0,0,6,0,0,15,4,16,0,0, %T A122480 6,0,0,17,4,18,0,0,4,18,0,0,4,18,0,11,0,8,22,3,0,4,20,0,0,0,4,0,0,0,6, %U A122480 0,0,0,4,16,28,13,0,0,0,0,0,6,10,5,0,4,6,0,0,0,0,4,0,11,0,12,6,0,0,21,8,18 %N A122480 Least k>2 such that n is equal to arithmetic mean of k consecutive primes. %K A122480 easy,nonn %O A122480 1,5 %A A122480 _Giovanni Teofilatto_, Sep 15 2006 %E A122480 Corrected and extended by _Ray Chandler_, Sep 25 2006