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 A006329 M4728 #22 Nov 07 2017 18:15:49 %S A006329 1,10,79,602,4682,38072,326570,2964992,28506383,289973248,3116028865, %T A006329 35308153600,421048783264,5273818620928,69250997724484, %U A006329 951571372015616,13658940616055885,204474999700324352,3187421031909630947,51663403849575956480 %N A006329 Total preorders. %D A006329 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A006329 G. Kreweras, <a href="http://www.numdam.org/item?id=MSH_1976__53__5_0">Les préordres totaux compatibles avec un ordre partiel</a>, Math. Sci. Humaines No. 53 (1976), 5-30. %H A006329 G. Kreweras, <a href="/A019538/a019538.pdf">Les préordres totaux compatibles avec un ordre partiel</a>, Math. Sci. Humaines No. 53 (1976), 5-30. (Annotated scanned copy) %Y A006329 A diagonal of A079502. %K A006329 nonn %O A006329 3,2 %A A006329 _N. J. A. Sloane_ %E A006329 More terms from _Sean A. Irvine_, Mar 12 2017