  A very simple empirical neutrino mass formula is found, implying the mass
proportion $m_1 : m_2 : m_3 = 1 : 4 : 24(1-\beta^2)$. For the value $\beta =
(5-1)(5-3)/5^2 = 8/25$ the formula predicts precisely $\Delta m^2_{21} \sim
8.0\times 10^{-5} {\rm eV}^2$ in consistency with the experiment, when the
input of experimental estimate $\Delta m^2_{32} \sim 2.4\times 10^{-3} {\rm
eV}^2$ is applied. Plausible interpretation of numerical elements building up
this formula is briefly described.
