Binomial Theorem

Let n\(\in\)N and [x] denote the greatest integer less than or equal to x. If the sum of (n + 1) terms \({}^n{C_0},3.{}^n{C_1},5.{}^n{C_2},7.{}^n{C_3},.....\) is equal to 2¹⁰⁰ . 101, then \(2\left[ {{{n - 1} \over 2}} \right]\) is equal to _______________.