u Calculate e

Time Limit: 2 Seconds
Memory Limit: 65536 KB

**Background**

A simple mathematical formula for e is

where n is allowed to go to infinity. This can actually yield
very accurate approximations of e using relatively small values of n.

**Output**

Output the approximations of e generated by the above formula for the values
of n from 0 to 9. The beginning of your output should appear similar to that
shown below.

**Example **

**Output**

n e
- -----------
0 1
1 2
2 2.5
3 2.666666667
4 2.708333333

Source:

**Greater New York 2000**
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