A068048 Length of the n-th nontrivial palindrome in decimal expansion of Pi.

3, 3, 3, 3, 5, 3, 2, 3, 2, 3, 4, 2, 3, 2, 4, 2, 2, 3, 5, 3, 2, 2, 2, 3, 2, 3, 3, 2, 3, 2, 2, 2, 3, 2, 4, 2, 2, 3, 2, 2, 4, 2, 2, 2, 2, 5, 3, 2, 3, 2, 2, 3, 3, 5, 3, 2, 4, 2, 3, 2, 2, 2, 3, 3, 3, 2, 2, 2, 2, 2, 3, 3, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2, 2, 2, 2, 3, 3, 2, 5