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 A220444 #9 Oct 12 2020 03:43:31 %S A220444 1,4,9,25,92 %N A220444 Total number of cells in the stacky fan A_n^cogr. %H A220444 Melody T. Chan, <a href="https://escholarship.org/uc/item/0nm4157r">Tropical curves and metric graphs</a>, Ph. D. Dissertation, Univ. Calif. Berkeley, Spring 2012. %Y A220444 Cf. A220445. %K A220444 nonn,more %O A220444 1,2 %A A220444 _N. J. A. Sloane_, Dec 22 2012