title: Find Sum Even Index Binomial Coefficients 1
signature: findSumEvenIndexBinomialCoefficients1(n) {
source_py: def find_sum_even_index_binomial_coefficients_1(n):
      return (1 << (n - 1))
source_cpp: int find_sum_even_index_binomial_coefficients_1(int n) {
    return ( 1 << ( n - 1 ) );
  }