Observe the differences between consecutive terms:
\[
5 - 2 = 3, \quad 10 - 5 = 5, \quad 17 - 10 = 7, \quad 26 - 17 = 9.
\]
The pattern shows the increments increase by 2 each time: 3, 5, 7, 9, …
The next difference should be 11.
Therefore, next term = $26 + 11 = 37$.