title: Find Sum Even Index Binomial Coefficients 1
signature: findSumEvenIndexBinomialCoefficients1 :: Integer -> Integer
  findSumEvenIndexBinomialCoefficients1 n = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Integer -> Integer -> Bool
  validateSolution actual expected = do
      actual == expected
  
  
  driver :: Integer -> Integer -> String
  driver n expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME n) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver (56) (36028797018963968) )
  
      printf "TEST-1...%s\n" (driver (28) (134217728) )
  
      printf "TEST-2...%s\n" (driver (4) (8) )
  
      printf "TEST-3...%s\n" (driver (24) (8388608) )
  
      printf "TEST-4...%s\n" (driver (30) (536870912) )
  
      printf "TEST-5...%s\n" (driver (48) (140737488355328) )
  
      printf "TEST-6...%s\n" (driver (32) (2147483648) )
  
      printf "TEST-7...%s\n" (driver (13) (4096) )
  
      printf "TEST-8...%s\n" (driver (19) (262144) )
  
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 ) );
  }