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 A379434 #6 Jan 16 2025 11:30:29 %S A379434 1,0,2,9,47,278,1720,11175,75149,519852 %N A379434 Number of rooted planar maps with n edges and without faces of degree 1 or 2. %Y A379434 Cf. A000168, A006392 (sensed), A006393 (unsensed), A379433. %K A379434 nonn,more %O A379434 0,3 %A A379434 _Andrew Howroyd_, Jan 14 2025