# Volume of Unit Hypersphere/Sequence

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## Sequence of Volumes of Unit Hyperspheres

The sequence of volumes of the unit sphere in $n$-dimensional space begins as follows:

\(\displaystyle n = 1\) | \(:\) | \(\displaystyle \map V 1 = 2\) | |||||||||||

\(\displaystyle n = 2\) | \(:\) | \(\displaystyle \map V 2 = 3.1\) | |||||||||||

\(\displaystyle n = 3\) | \(:\) | \(\displaystyle \map V 3 = 4.2\) | |||||||||||

\(\displaystyle n = 4\) | \(:\) | \(\displaystyle \map V 4 = 4.9\) | |||||||||||

\(\displaystyle n = 5\) | \(:\) | \(\displaystyle \map V 5 = 5.264\) | |||||||||||

\(\displaystyle n = 6\) | \(:\) | \(\displaystyle \map V 6 = 5.2\) | |||||||||||

\(\displaystyle n = 7\) | \(:\) | \(\displaystyle \map V 7 = 4.7\) |

## Sources

- 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): $5 \cdotp 256 \, 946 \, 404 \, 860 \ldots$ - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): $5 \cdotp 25694 \, 64048 \, 60 \ldots$