如图,长方形\(ABCD\)中,\(AB=6\),第\(1\)次平移将长方形\(ABCD\)沿\(AB\)的方向向右平移\(5\)个单位,得到长方形\(A_{1}B_{1}C_{1}D_{1}\),第\(2\)次平移将长方形\(A_{1}B_{1}C_{1}D_{1}\)沿\(A_{1}B_{1}\)的方向向右平移\(5\)个单位,得到长方形\(A_{2}B_{2}C_{2}D_{2}…\),第\(n\)次平移将长方形\(A_{n-1}B_{n-1}C_{n-1}D_{n-1}\)沿\(A_{n-1}B_{n-1}\)的方向平移\(5\)个单位,得到长方形\(A_{n}B_{n}C_{n}D_{n}(n > 2)\),则\(AB_{n}\)长为 ______ .