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 A058789 #10 Feb 26 2015 02:08:57 %S A058789 0,1,2,11,74,633,6134,64439,709302,8085725,94713809,1134914458, %T A058789 13865916560,172301697581,2173270387051 %N A058789 Number of polyhedra with n faces and n+1 vertices (or n vertices and n+1 faces). %C A058789 Through a(18) the only primes are 2, 11, and 64439. - _Jonathan Vos Post_, Apr 23 2011 %H A058789 G. P. Michon, <a href="http://www.numericana.com/data/polyhedra.htm">Counting Polyhedra</a> %e A058789 a(5)=1 because the triangular prism is the only pentahedron with 6 vertices. %Y A058789 Cf. A002856, A000109, A058786, A058787, A058788. %K A058789 hard,nice,nonn %O A058789 4,3 %A A058789 _Gerard P. Michon_, Nov 30 2000