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 A361454 #5 Mar 21 2023 23:08:47 %S A361454 1,4,17,78,360,1835,10168,62271,419701,3107800,25108419,219982357, %T A361454 2076785950,21011123423,226708386212,2598075587529,31509529248585, %U A361454 403155101535686,5426659537490872,76655160760249052,1133766220709242638,17522418780011531368,282452568669871514771,4740645804610572971112 %N A361454 Number of 4-regular multigraphs on n unlabeled nodes with 4 external legs, loops allowed. %Y A361454 Cf. A129429, A361698 (connected). %K A361454 nonn %O A361454 1,2 %A A361454 _Andrew Howroyd_, Mar 21 2023