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 A205678 #5 Mar 30 2012 18:58:11 %S A205678 2,2,4,3,3,6,2,4,5,2,4,5,8,3,6,7,2,4,5,8,9,3,6,7,10,3,6,7,10,12,2,4,5, %T A205678 8,9,11,2,4,5,8,9,11,14,3,6,7,10,12,13,2,4,5,8,9,11,14,15,3,6,7,10,12, %U A205678 13,16,2,4,5,8,9,11,14,15,17,2,4,5,8,9,11,14 %N A205678 The number j such that 4 divides prime(k)-prime(j), where k(n)=A205677(n). %C A205678 For a guide to related sequences, see A205558. %e A205678 (See the example at A205677.) %t A205678 (See the program at A205677.) %Y A205678 Cf. A205677, A205558. %K A205678 nonn %O A205678 1,1 %A A205678 _Clark Kimberling_, Jan 30 2012