local function getgcd(x, y)
  while 0 < x do
    x, y = y % x, x
  end
  return y
end
local n = io.read("*n")
local t = {}
for i = 1, n do
  t[i] = io.read("*n")
end
local ret = 0
for i = 1, n - 2 do
  for j = i + 1, n - 1 do
    for k = j + 1, n do
      local z = getgcd(getgcd(t[i], t[j]), t[k])
      if z == 1 then ret = ret + 1 end
    end
  end
end
print(ret)