#!/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))