A056935 - OEIS

%I #16 Jun 01 2022 18:53:59

%S 1,175,8790,211250,3092808,31635580,246441430,1549486490,8192995479,

%T 37548347569,152602439244,559835910940,1880152558980,5846268790220,

%U 16988036626948,46486024648180,120562654732065,297976456047575

%N Antichains (or order ideals) in the poset 2*3*3*n or size of the distributive lattice J(2*3*3*n)

%D Berman and Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), p. 103-124

%H 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 <a href="/index/Pos#posets">Index entries for sequences related to posets</a>

%Y Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056934, A056936, A056937.

%K nonn,easy

%O 0,2

%A _Mitch Harris_