Dobiński's formula

In combinatorial mathematics, Dobiński's formula states that the n-th Bell number Bn (i.e., the number of partitions of a set of size n) equals where denotes Euler's number.The formula is named after G. Dobiński, who published it in 1877.

Dobiński's formula

In combinatorial mathematics, Dobiński's formula states that the n-th Bell number Bn (i.e., the number of partitions of a set of size n) equals where denotes Euler's number.The formula is named after G. Dobiński, who published it in 1877.