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 A003322 M1282 #33 Jun 17 2022 16:15:09 %S A003322 1,1,1,2,4,14,57,347,2375,20752,200805,2293192,28097136,381963696, %T A003322 5651257984,87997162749,1478237810536,26259254617337,491527066667949, %U A003322 9640606422165480 %N A003322 Necklace permutations. %D A003322 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A003322 H. W. Gould, <a href="/A002998/a002998.pdf">Letters to N. J. A. Sloane, 1974</a>. %H A003322 D. E. Knuth, <a href="http://dx.doi.org/10.2307/2318994">Computer science and its relation to mathematics</a>, Amer. Math. Monthly, 81 (1974), 323-343. doi: 10.2307/2318994. %H A003322 D. E. Knuth, H. Wilf, C. L. Mallows, & D. Klarner, <a href="/A003322/a003322.pdf">Correspondence, 1994</a>, %H A003322 <a href="/index/Ne#necklaces">Index entries for sequences related to necklaces</a>. %K A003322 nonn,more,nice %O A003322 1,4 %A A003322 _N. J. A. Sloane_ %E A003322 Corrected and extended by _Don Knuth_, Nov 15 1995