To solve the sequence $2, 3, 8, 31, ?$, let's look for a pattern.

One possible approach is to check the difference between consecutive terms:

$3 - 2 = 1$ $8 - 3 = 5$ $31 - 8 = 23$

Now, let's look at the differences between these differences:

$5 - 1 = 4$ $23 - 5 = 18$

Notice that the differences between the differences seem to be increasing as well. This suggests a possible quadratic pattern.

The next difference could follow the same pattern of increasing by an additional factor. If the second difference increased by $14$ (from 4 to 18), adding the next expected increase (of $32$):

$23 + 32 = 55$

Adding this to the last term:

$31 + 55 = 86$

So, the next term in the sequence should be 86.

Would you like further details, or have any questions? Here are some questions for you:

1. Would you like to explore another sequence?
2. Can I help you find a formula for this sequence?
3. Do you want to analyze the pattern using a different method?
4. Would you like to see the entire process in a step-by-step manner?
5. Do you want to explore more complex sequences?

Tip: When dealing with sequences, always look for patterns in differences or ratios between terms!