A056104 Number of 9-antichain covers of a labeled n-set.

20, 1484110, 15936368770, 59961701958816, 121740972715475096, 167109117756164222210, 176340421320592288902670, 154794453668193645059165412, 118987888829384136293188343172

Offset: 6

Author

Vladeta Jovovic, Goran Kilibarda, Zoran Maksimovic, Jul 29 2000

Keywords

• nonn

References

• V. Jovovic and G. Kilibarda, On the number of Boolean functions in the Post classes F^{mu}_8, Diskretnaya Matematika, 11 (1999), no. 4, 127-138 (translated in Discrete Mathematics and Applications, 9, (1999), no. 6)
• V. Jovovic, G. Kilibarda, On enumeration of the class of all monotone Boolean functions, in preparation.

Links

• K. S. Brown, Dedekind's problem
• Eric Weisstein's World of Mathematics, Antichain covers

Crossrefs

Cf. A056046-A056049, A056052, A051112-A051118.