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 A110887 #3 Jun 23 2015 11:20:38 %S A110887 1,1,2,3,7,19,74 %N A110887 Number of configurations of n skew lines up to isotopy. %D A110887 A. Borobia and V. F. Mazurovskii, On diagrams of configurations of 7 skew lines in R^3, Amer. Math. Soc. Transl. (2) 173 (1996), 33-40 %D A110887 A. Borobia and V. F. Mazurovskii, Nonsingular configurations of 7 lines in RP^3, J. Knot Theory Ramif. 6(6) (1997), 751-783 %D A110887 O. Y. Viro and Y. V. Drobotukhina, Configurations of skew lines, Leningrad Math. J. 1(4) (1990), 1027-1050 %K A110887 hard,more,nonn %O A110887 1,3 %A A110887 _David Garber_, Sep 20 2005