IBM Ponder This #138 · October 2009

Complete the following sequence:

1, 13, 2, 1, 5, 3, 2, 1, 4, 4, 7, 3, 1, 5, 3, 5, ?, ?

Beware - this month's challenge is different than usual.

Hint (10/07): The solution is related to a quote about mathematicians.

Solution

Best opened after a real attempt

To be added.