I like this Sequences. It is very useful. The menus are easy to understand, too. However there are three small problems ("small" being the keyword, not a big deal):
1.) I picked up on it, but the phrase "1ST-BOT" was slightly confusing.
2.) There were two or three syntax errors that didn't allow me to use certain functions of the program at first, but I was able to correct them in just a few seconds.
3.) For the geometric part of the program, the program describes what is actually the ratio between terms as being the difference -- not too confusing, but there is no such thing as a constant "difference" between terms of a geometric sequence.
Other than those few small errors, it's a pretty good program. Just make sure that you know BASIC programming language if you download it, because you will need to correct a few errors in the code.