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 A056936 #18 Jun 01 2025 22:52:58 %S A056936 1,490,59542,3092808,89613429,1691136270,22954776044,239831111938, %T A056936 2024703039198,14318216628378,87184226214168,467034400160664, %U A056936 2239064967256060,9741467994941264,38902816410160608 %N A056936 Antichains (or order ideals) in the poset 2*3*4*n or size of the distributive lattice J(2*3*4*n). %D A056936 Berman and Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), p. 103-124 %H A056936 J. Berman and P. Koehler, <a href="/A006356/a006356.pdf">Cardinalities of finite distributive lattices</a>, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), 103-124. [Annotated scanned copy] %H A056936 <a href="/index/Pos#posets">Index entries for sequences related to posets</a> %Y A056936 Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056934, A056935, A056937. %K A056936 nonn,easy %O A056936 0,2 %A A056936 _Mitch Harris_