A377408 Number of unlabeled semidistributive lattices with n elements.

1, 1, 1, 2, 4, 9, 22, 60, 174, 534, 1720, 5767, 20013, 71546

Offset: 1

Author

Ludovic Schwob, Oct 27 2024

Keywords

• nonn
• more

Comments

The smallest semidistributive lattice that is not congruence-uniform has 14 elements.

Links

• H. Mühle, On the lattice property of shard orders, arXiv:1708.02104 [math.CO], 2017.

Crossrefs

Cf. A006982 (distributive lattices), A292790 (congruence-uniform lattices).