Project Euler 29

problem

For 2 ≤ a ≤ 5 and 2 ≤ b ≤ 5, consider all ʻa ** b`:

2**2=4, 2**3=8, 2**4=16, 2**5=32 3**2=9, 3**3=27, 3**4=81, 3**5=243 4**2=16, 4**3=64, 4**4=256, 4**5=1024 5**2=25, 5**3=125, 5**4=625, 5**5=3125 If you arrange them in ascending order and exclude the same number, you get 15 terms:

4, 8, 9, 16, 25, 27, 32, 64, 81, 125, 243, 256, 625, 1024, 3125

How many different terms exist when doing the same thing with 2 ≤ a ≤ 100 and 2 ≤ b ≤ 100? http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2029

Answer

Speaking of which, practice of list comprehension? Wonder?

def cof():
  seq = range(2,101)
  ans = len(set([x**y for x in seq for y in seq]))
  print ans

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