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 A383219 #5 May 04 2025 16:48:00 %S A383219 0,0,1,2,10,93,2813,616830,1833587417,52972875977730 %N A383219 Number of nilpotent semigroups by order, up to isomorphism and anti-isomorphism. %H A383219 Andreas Distler, <a href="https://research-repository.st-andrews.ac.uk/handle/10023/945">Classification and Enumeration of Finite Semigroups</a>, PhD Thesis, University of St. Andrews, (2010). %Y A383219 Cf. A001423. %K A383219 nonn,hard,more %O A383219 0,4 %A A383219 _Joseph E. Marrow_, Apr 19 2025