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 A214335 #10 Jan 08 2024 09:39:54 %S A214335 0,690,16925,237652,2518957,22417804 %N A214335 Number of rooted maps with n vertices and 2 faces on a non-orientable surface of type 3/2. %H A214335 Didier Arquès and Alain Giorgetti, <a href="https://doi.org/10.1016/S0304-3975(98)00230-8">Counting rooted maps on a surface</a>, Theoret. Comput. Sci. 234 (2000), no. 1-2, 255--272. MR1745078 (2001f:05078). %Y A214335 A diagonal of A214337. %K A214335 nonn %O A214335 0,2 %A A214335 _N. J. A. Sloane_, Jul 27 2012