A261994 Number of complemented lattices on n nodes.

1, 1, 1, 0, 1, 2, 6, 18, 71, 307, 1594, 9446, 63461

Offset

0,6

References

R. Belohlavek, V. Vychodil, Residual lattices of size <=12, Order 27 (2010) 147-161 doi:10.1007/s11083-010-9143-7, Table 6

Links

Table of n, a(n) for n=0..12.

Prog

(Sage)
for n in range(7):
    print(len([L for L in Posets(n) if L.is_lattice() and LatticePoset(L).is_complemented()]))

Crossrefs

Sequence in context: A060181 A131281 A264036 * A177472 A364849 A194088

Adjacent sequences: A261991 A261992 A261993 * A261995 A261996 A261997

Keyword

nonn,more

Author

Jori Mäntysalo, Sep 08 2015

Status

approved