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 A205395 #6 Mar 30 2012 18:58:11 %S A205395 1,1,2,1,4,2,1,3,3,4,2,1,3,6,2,2,1,3,5,3,4,10,2,1,7,12,3,5,8,2,1,6,4, %T A205395 16,2,3,5,18,2,1,12,4,6,9,3,22,7,2,1,5,14,11,4,6,6,3,9,28,2,1,19,30, %U A205395 10,4,8,8,3,15,20,2,1,5,7,36,10,17,4,10,3,3 %N A205395 The index j<k such that n divides s(k)-s(j) for some j, where s(j)=ceiling(j^2/2), and k is the least index for which such an index j exists. %C A205395 For a guide to related sequences, see A204892. %t A205395 (See the program at A205394.) %Y A205395 Cf. A205394, A204892. %K A205395 nonn %O A205395 1,3 %A A205395 _Clark Kimberling_, Jan 27 2012