k = 2 + 5 ** 0.5

out = []
maxx = 12
m = 4
n = 1

def test(x, y):
  b2 = 4 * x * y
  h = x ** 2 - y ** 2
  if abs(h - b2) == 1:
    #print b2, h, x, y
    out.append(x ** 2 + y ** 2)
    return True
  return False

while len(out) < maxx:
  m = int(k * n) - 1
  for i in [0,1,2]:
    if test(m + i, n):
      #print out[-1]
      n = m
  n += 1

print sum(out)