N = gets.to_i

ans = [*0..N]
checked = Hash.new(false)

1.upto(N) do |i|
  n = 1
  max_v = 0

  while (n + 1) ** 2 * i <= N
    n += 1

    max_v = n * n * i if !checked[n * n * i]
  end

  if Math.sqrt(i).to_i ** 2 == i
    while (n + 1) ** 2 < N
      n += 1

      max_v = n * n if !checked[n * n]
    end
  end

  checked[max_v] = true
  if max_v > i
    ans[i], ans[max_v] = ans[max_v], ans[i]
  end
end

puts ans[1..].join(' ')