It seems like there is no official tittyboard post generator for generating urls of sequential image numbers. I have some php code that I wrote for another site that generates image urls with both number ranges [start-end] and letter ranges {a-z} It even generates multiple numbers/letters in a url ex:
http://www.imageplace.com/dir[0-10]/img{a-z}_[00-30].jpg
I think it would be great if we could integrate some code like this into the forums to have a powerful image post generator.