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<h1 id="function-bellnumbers">Function bellNumbers <a href="#function-bellnumbers" title="Permalink">#</a></h1>

The Bell Numbers count the number of partitions of a set. A partition is a pairwise disjoint subset of S whose union is S.
bellNumbers only takes integer arguments.
The following condition must be enforced: n >= 0


<h2 id="syntax">Syntax <a href="#syntax" title="Permalink">#</a></h2>

```js
math.bellNumbers(n)
```

<h3 id="parameters">Parameters <a href="#parameters" title="Permalink">#</a></h3>

Parameter | Type | Description
--------- | ---- | -----------
`n` | Number &#124; BigNumber | Total number of objects in the set

<h3 id="returns">Returns <a href="#returns" title="Permalink">#</a></h3>

Type | Description
---- | -----------
Number &#124; BigNumber | B(n)


<h3 id="throws">Throws <a href="#throws" title="Permalink">#</a></h3>

Type | Description
---- | -----------


<h2 id="examples">Examples <a href="#examples" title="Permalink">#</a></h2>

```js
math.bellNumbers(3) // returns 5
math.bellNumbers(8) // returns 4140
```


<h2 id="see-also">See also <a href="#see-also" title="Permalink">#</a></h2>

[stirlingS2](stirlingS2.html)