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 A205676 #8 Mar 30 2012 18:58:11 %S A205676 5,8,10,13,18,21,23,25,26,30,32,33,36,39,42,43,47,49,50,53,54,58,61, %T A205676 62,65,69,72,73,76,78,80,82,83,86,87,89,93,95,96,99,100,102,105,108, %U A205676 111,112,115,117,118,122,124,125,128,129,131,134,135,139,142,143 %N A205676 Positions of multiples of 4 in A204890 (differences of primes). %C A205676 For a guide to related sequences, see A205558. %e A205676 In A204890=(1,3,2,5,4,2,9,8,6,4,11,10,8,...), multiples of 4 are in positions 5,8,10,13,... %e A205676 See the example at A205677. %t A205676 (See the program at A205677.) %Y A205676 Cf. A205677, A205558. %K A205676 nonn %O A205676 1,1 %A A205676 _Clark Kimberling_, Jan 30 2012