Hilbert-Waring Theorem/Particular Cases/7

Particular Case of the Hilbert-Waring Theorem: $k = 7$
The Hilbert-Waring Theorem states that:

The case where $k = 7$ is:

Every positive integer can be expressed as the sum of at most $143$ positive seventh powers.

That is:
 * $g \left({7}\right) = 143$