Harmonic Number
Online calculation of harmonic sequence terms.
Harmonic Number
The harmonic number of rank n or "n-th harmonic number" is the partial sum of the harmonic series,
`H_n = sum_(k=1)^n \frac{1}{k} = 1 + \frac{1}{2} + \frac{1}{3} + ... + \frac{1}{n}`
See also
Arithmetic sequence
Geometric sequence