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 A205401 #5 Mar 30 2012 18:58:11 %S A205401 1,3,2,5,4,14,8,7,23,12,11,18,34,17,16,24,47,23,22,52,31,63,30,29,82, %T A205401 39,50,38,37,49,87,48,60,47,46,59,72,58,100,57,56,115,70,84,69,186,68, %U A205401 67,155,82,130,81,174,80,79,112,205,95,296,94,128,93,92,164,127 %N A205401 Least h such that n divides the h-th difference between distinct numbers quarter-squares; the differences are ordered as in A205400. %C A205401 For a guide to related sequences, see A204892. %t A205401 (See the program at A205402.) %Y A205401 Cf. A205402, A204892. %K A205401 nonn %O A205401 1,2 %A A205401 _Clark Kimberling_, Jan 27 2012