Quick bruteforce char set help

I'm trying bruteforce a password with a known length of 16 chars only. Any of the 16 can be uppercase alpha or numeric. There are no special chars, no lowercase, etc. If someone could tell me the easiest way to get this result, I'd appreciate it.

I'm sure this has been explained somewhere, so excuse the duplication - I wasn't able to track down an answer to this specific question, though I'm sure it's an easy one.