What comes next in the sequence: B, E, H, K, _?

Let's look at the alphabetical positions of the letters in the sequence:
* $\text{B}=2$
* $\text{E}=5$
* $\text{H}=8$
* $\text{K}=11$

The pattern involves adding $3$ to the position of each preceding letter:

$$2+3=5(\text{E})$$

$$5+3=8(\text{H})$$

$$8+3=11(\text{K})$$

$$11+3=14(\text{N})$$

The $14\text{th}$ letter of the English alphabet is N.