If the number of subsets with 8 elements from the set $\mathrm{A}=\left\{a_1, a_2, a_3, \ldots a_n\right\},…
If the number of subsets with 8 elements from the set $\mathrm{A}=\left\{a_1, a_2, a_3, \ldots a_n\right\}, n \geq 8$, is five times the number of such subsets containg $a_4$, then $n=$