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 A380366 #4 Jan 28 2025 15:28:48 %S A380366 1,1,3,11,48,291,2464,27146,377966,6239425 %N A380366 Number of unsensed combinatorial maps with n edges and without faces of degree 1. %Y A380366 Cf. A006389 (planar), A214816, A380364 (rooted), A380365 (sensed). %K A380366 nonn,more %O A380366 0,3 %A A380366 _Andrew Howroyd_, Jan 28 2025