What comes next in this series 1 1 3 2 4 6 5 25?

Answer 1

It appears that the pattern is a) square the number b) add 2 c) subtract 1.

This suggests the next number will be 27.

Answer 2

The next number in the series is 36. The series alternates between two patterns: the square of the index (1, 4, 9, 16, etc.) and the index itself (1, 2, 3, 4, etc.). The pattern restarts every 2 indexes.