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 A098804 #10 Mar 04 2020 05:53:48 %S A098804 0,0,0,0,0,0,1,1,2,2,1,4,2,3,5,6,2,9 %N A098804 Number of point-transitive configurations of type (n_3). %H A098804 A. Betten, G. Brinkmann and T. Pisanski, <a href="https://doi.org/10.1016/S0166-218X(99)00143-2">Counting symmetric configurations v_3</a>, Discrete Appl. Math., 99 (2000), 331-338. %Y A098804 Cf. A001403, A023994. %K A098804 nonn,hard,more %O A098804 1,9 %A A098804 _N. J. A. Sloane_, Nov 05 2004