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 A112947 #3 Mar 30 2012 18:53:07 %S A112947 0,1904,17313263640,53786496621600480,115106032016630589567220, %T A112947 204887911426306253833736206368,326950476035695538194385010882728640, %U A112947 485422668906114651402145718767396615062912 %N A112947 Number of unrooted regular odd-valent planar maps with 10 vertices; maps are considered up to orientation-preserving homeomorphisms and the vertices are of valency 2n+1. %C A112947 There is a closed formula. %H A112947 Z. C. Gao, V. A. Liskovets and N. C. Wormald, <a href="http://mathstat.carleton.ca/~zgao/PAPER/poles.pdf">Enumeration of unrooted odd-valent regular planar maps</a>, Preprint, 2005. %Y A112947 Cf. A112946. %K A112947 nonn %O A112947 0,2 %A A112947 _Valery A. Liskovets_, Oct 10 2005