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 A074026 #15 Feb 16 2022 11:14:30 %S A074026 1,2,8,30,124,516,2232,9750,43400,195248,887784,4068740,18780048, %T A074026 87191964 %N A074026 Duplicate of A054663. %C A074026 Also number of 5-ary Lyndon words of trace 0 over GF(5). %H A074026 F. Ruskey, <a href="http://combos.org/TlyndonZk">Number of q-ary Lyndon words with given trace mod q</a> %H A074026 F. Ruskey, <a href="http://combos.org/TlyndonFk">Number of Lyndon words over GF(q) with given trace</a> %Y A074026 Cf. A054662. %K A074026 dead %O A074026 1,2 %A A074026 _Frank Ruskey_ and Nate Kube, Aug 21 2002