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 A112949 #2 Mar 30 2012 18:53:07 %S A112949 7,468,111096,39670362,17313263640,8581243954044,4650485509103976, %T A112949 2692853733312152946,1641063780244320916056,1041574815624514527248040 %N A112949 Number of unrooted regular planar maps of valency 5 with 2n vertices (considered up to orientation-preserving homeomorphisms). %C A112949 No closed formula is known. %H A112949 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 A112949 Cf. A112948, A112950. %K A112949 nonn %O A112949 1,1 %A A112949 _Valery A. Liskovets_, Oct 10 2005