Bell numbers
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Revision as of 04:23, 27 June 2015 by Tom (talk | contribs) (Created page with "The Bell numbers $B_n$ are defined by the formula $$B_n = \displaystyle\sum_{k=0}^n S(n,k),$$ where $S(n,k)$ denotes the Stirling numbers of the second kind.")
The Bell numbers $B_n$ are defined by the formula $$B_n = \displaystyle\sum_{k=0}^n S(n,k),$$ where $S(n,k)$ denotes the Stirling numbers of the second kind.
