TeX джерело:

{T_{13}} = {N_{12 + 1}} = C_{15}^3{(\sqrt[3]{3})^3}{(\sqrt 2 )^{12}} = C_{15}^33 \cdot {2^6} = \frac{{15 \cdot 14 \cdot 13}}{{1 \cdot 2 \cdot 3}} \cdot 3 \cdot {2^6} = 87360