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 A005281 M4104 #18 Dec 01 2022 05:02:14 %S A005281 1,6,14,23,34,46 %N A005281 Davenport-Schinzel numbers of degree 6 on n symbols. %D A005281 R. K. Guy, Unsolved Problems in Number Theory, E20. %D A005281 D. P. Roselle and R. G. Stanton, Results on Davenport-Schinzel sequences, pp. 249-267 in Proceedings of the Louisiana Conference on Combinatorics, Graph Theory and Computer Science. Vol. 1, edited R. C. Mullin et al., 1970. %D A005281 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A005281 Fausto A. C. Cariboni, <a href="/A005281/a005281.txt">All sequences of maximal size that yield a(6)</a>, Dec 01 2022. %Y A005281 Cf. A002004, A005280, A259874. %K A005281 nonn,hard,more %O A005281 1,2 %A A005281 _N. J. A. Sloane_ %E A005281 Name edited by _Jinyuan Wang_, Aug 09 2021 %E A005281 a(6) from _Fausto A. C. Cariboni_, Dec 01 2022