title: Find Sum Even Index Binomial Coefficients 1
signature: function find_sum_even_index_binomial_coefficients_1(n)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(n, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(n), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver(56, 36028797018963968);
      @printf("TEST-0...%s\n",result);
      
      result = driver(28, 134217728);
      @printf("TEST-1...%s\n",result);
      
      result = driver(4, 8);
      @printf("TEST-2...%s\n",result);
      
      result = driver(24, 8388608);
      @printf("TEST-3...%s\n",result);
      
      result = driver(30, 536870912);
      @printf("TEST-4...%s\n",result);
      
      result = driver(48, 140737488355328);
      @printf("TEST-5...%s\n",result);
      
      result = driver(32, 2147483648);
      @printf("TEST-6...%s\n",result);
      
      result = driver(13, 4096);
      @printf("TEST-7...%s\n",result);
      
      result = driver(19, 262144);
      @printf("TEST-8...%s\n",result);
      
  end
  
  main()
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 ) );
  }