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 A056934 #18 Jun 01 2025 22:52:45 %S A056934 1,540,75966,4701698,164489084,3764727340,61951251333,782318812002, %T A056934 7946895019096,67270102239520,487605585591870,3092040981805272, %U A056934 17451258588313354,88902214572208640,413569247116248032 %N A056934 Antichains (or order ideals) in the poset 2*2*7*n or size of the distributive lattice J(2*2*7*n). %D A056934 Berman and Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), p. 103-124 %H A056934 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 A056934 <a href="/index/Pos#posets">Index entries for sequences related to posets</a> %Y A056934 Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056935, A056936, A056937. %K A056934 nonn,easy %O A056934 0,2 %A A056934 _Mitch Harris_