#!/usr/bin/env python3

def sols():
    """yields int solutions of a**2 - 5 b**2 = 1"""
    a, b = 9, 4
    while True:
        yield a, b
        a, b = 9*a + 20*b, 4*a + 9*b

def cs():
    """yields int solutions of a in a**2 - 5 b**2 = 44"""
    base_sols = [(7, 1), (8, 2), (13, 5), (17, 7), (32, 14), (43, 19)]
    base_sols.reverse()
    for a, b in sols():
        for a0, b0 in base_sols:
            yield a0 * a - 5 * b0 * b


N = 30
gen = cs()
next(gen)

nuggs = []

while len(nuggs) < N:
    c = next(gen)
    if (c - 7) % 5 != 0:
        continue
    nuggs.append((c-7) // 5)

print(sum(nuggs))