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 A205103 #5 Mar 30 2012 18:58:10 %S A205103 1,2,6,12,5,6,7,40,45,40,33,12,13,14,45,336,102,90,57,40,336,42240,46, %T A205103 336,3825,104,3456,336,645105,90,279,3456,33,102,840,3456,46065,3838, %U A205103 897,40,369,336,2026977,42240,45,46,47,336,10290,9450,102,104 %N A205103 k!!-j!!, where (k!!,j!!) is the least pair of double factorials for which n divides their difference. %C A205103 For a guide to related sequences, see A204892. %t A205103 (See the program at A204982.) %Y A205103 Cf. A204982, A204892. %K A205103 nonn %O A205103 1,2 %A A205103 _Clark Kimberling_, Jan 22 2012