No one lived less than 365 years (and this is Enoch, who was a special case), and Methuselah lived a total of 969 years. Adam-Seth-Enosh-Cainan-Mahalalel-Jared-Enoch-Methuselah-Lamech-Noah.
One writer has estimated that if Adam, during his lifetime, saw only half the children he could have fathered grow up, and if only half of those got married, and if only half of those who got married had children, then even at these conservative rates, Adam would have seen more than a million of his own descendants.
