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 A205379 #5 Mar 30 2012 18:58:10 %S A205379 1,1,1,1,2,1,3,1,2,2,5,1,6,3,1,2,8,2,9,2,1,5,11,1,3,6,2,3,14,1,15,4,3, %T A205379 8,2,2,18,9,4,2,20,1,21,5,1,11,23,1,4,3,6,6,26,2,1,3,7,14,29,1 %N A205379 The index j<k such that n divides s(k)-s(j) for some j, where s(j)=(2j-1)^2. %C A205379 For a guide to related sequences, see A204892. %t A205379 (See the program at A205378.) %Y A205379 Cf. A205378, A204892. %K A205379 nonn %O A205379 1,5 %A A205379 _Clark Kimberling_, Jan 26 2012