Defining an algorithim

[savvamadar15]

I need to crack an sha256 hash

I know that the encrypted string follows this pattern

#-XXXXXXXXXX

#= A number generated between 1 and 25
X= Character generated from one of the below

abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890

So it could be something like this:

20-2lje2ezTvu

or

2-wa4tnSoYWB

I wrote a code for this in java but that uses CPU and is super slow.
Assuming I use hashcat-gui and oclHashcat-lite what exactly do I put in.
Anyone interested in the java code: http://pastebin.com/fqddhKjJ

Thanks for the help everyone!