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 A205690 #8 Mar 30 2012 18:58:11 %S A205690 9,14,18,20,25,27,31,33,35,39,41,43,45,49,51,53,59,61,63,66,69,71,73, %T A205690 75,76,82,84,86,89,90,94,96,98,100,101,104,108,110,112,114,115,118, %U A205690 120,123,125,127,129,130,133,135,136,140,142,144,147,148,150,157 %N A205690 Positions of multiples of 6 in A204890 (differences of primes). %C A205690 For a guide to related sequences, see A205558. %e A205690 In A204890=(1,3,2,5,4,2,9,8,6,4,11,10,8,...), multiples of 6 are in positions 9,14,18,... See the example at A205691. %t A205690 (See the program at A205691.) %Y A205690 Cf. A205691, A205558. %K A205690 nonn %O A205690 1,1 %A A205690 _Clark Kimberling_, Jan 31 2012