What is the value of ${\mathrm{n}}_1$ in Balmer theory?

Balmer theory

• When an electron jumps from a higher stationary orbit to the second stationary orbit with n=2, spectral lines are released that are known as the Balmer series.
• Electrons move from higher energy levels $\left({\mathrm{n}}_{\mathrm{h}}=3,4,5,6,7,......\right)$to the lower energy state $\left({\mathrm{n}}_{\mathrm{I}}=2\right)$, then Balmer series appears.

The initial state for ${\mathrm{n}}_1$ in Balmer theory is $2$.