A056936 Antichains (or order ideals) in the poset 2*3*4*n or size of the distributive lattice J(2*3*4*n).

1, 490, 59542, 3092808, 89613429, 1691136270, 22954776044, 239831111938, 2024703039198, 14318216628378, 87184226214168, 467034400160664, 2239064967256060, 9741467994941264, 38902816410160608

Offset: 0

Author

Mitch Harris

Keywords

• nonn
• easy

References

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

Links

• J. Berman and P. Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), 103-124. [Annotated scanned copy]
• Index entries for sequences related to posets

Crossrefs

Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056934, A056935, A056937.