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 A160888 #2 Mar 30 2012 16:51:24 %S A160888 3,19,225,3475,61521 %N A160888 Regular coverings having dihedral voltage groups: see Kwak-Lee reference in A160870 for precise definition. %K A160888 nonn %O A160888 1,1 %A A160888 _N. J. A. Sloane_, Nov 15 2009