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 A049370 #13 Feb 16 2025 08:32:40 %S A049370 0,0,1,3,10,50,335,3194,39347,579323,9506939,167343828 %N A049370 Number of n-node planar graphs with minimum degree at least 2. %H A049370 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PlanarGraph.html">Planar Graph</a>. %K A049370 nonn,nice,hard,more %O A049370 1,4 %A A049370 _Brendan McKay_ %E A049370 a(12) from _Sean A. Irvine_, Aug 21 2021