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 A368461 #7 Dec 26 2023 08:33:57 %S A368461 1,1,1,2,4,8,16,33,70,151,329,723,1601,3569,8000,18015,40723,92351, %T A368461 209997,478598,1092856,2499567,5724970,13128115,30135636,69238343, %U A368461 159202607,366308948,843338278,1942591448,4476714720,10320774953,23802355725,54911686727 %N A368461 a(n) is the number of unlabeled planar modular lattices on n nodes. %H A368461 Jukka Kohonen, <a href="https://bitbucket.org/jkohonen/modular-racks/">Modular racks</a> (code to compute the numbers). %Y A368461 Cf. A006981 (modular lattices), A343161 (planar distributive lattices). %K A368461 nonn %O A368461 1,4 %A A368461 _Jukka Kohonen_, Dec 25 2023