20 lines
332 B
Python
20 lines
332 B
Python
#!/usr/bin/env python3
|
|
|
|
from math import sqrt
|
|
|
|
def is_palindrome(n):
|
|
return str(n) == str(n)[::-1]
|
|
|
|
lim = 10**8
|
|
nums = []
|
|
|
|
for n in range(2, int(sqrt(lim))+1):
|
|
s = (n-1)**2 + n**2
|
|
while s < lim:
|
|
if is_palindrome(s) and s not in nums:
|
|
nums.append(s)
|
|
n += 1
|
|
s += n**2
|
|
|
|
print(sum(nums))
|