Summation Formula
Kisielewicz (1988) rewrote the logical definition of antichains into the following arithmetic formula for the Dedekind numbers:
where is the th bit of the number, what can be written using the floor function as
However, this formula is not helpful for computing the values of M(n) for large n due to the large number of terms in the summation.
Read more about this topic: Dedekind Number
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