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 A072361 #19 Apr 18 2021 01:47:12 %S A072361 0,1,0,1,0,1,0,3,1,6,2,16,8,42,28,112,93,311,295,869,939,2454,2931, %T A072361 7032,9036,20301,27701,58929,84413,172104,255919,504637,773511, %U A072361 1484392,2331180,4378773,7009288,12944347,21039961,38328890,63067623,113651785,188831922,337361112,564890985,1002268019,1688673026,2979703035,5045200597 %N A072361 Number of vertically indecomposable distributive lattices on n nodes. %H A072361 M. Erné, J. Heitzig and J. Reinhold, <a href="http://www.combinatorics.org/ojs/index.php/eljc/article/view/v9i1r24">On the number of distributive lattices</a>, Electronic Journal of Combinatorics, 9 (2002), #R24. %Y A072361 Cf. A006982, A072407. %K A072361 nonn %O A072361 1,8 %A A072361 _N. J. A. Sloane_, Aug 01 2002 %E A072361 Word "distributive" added to the Name by _Peter Jipsen_, Mar 05 2013