i need help with a pattern

[JohnnyBoy022]

i found this on a cd that from a local band - it was just the numbers before the name of the songs on the back of the cd

1.
two:
iii. (3 in roman numerals)
100: (4 in binary)
% : (% is on the same key as 5)
&#54:

i need help figuring out that last one, it has to represent 6 somehow

[LaRoza]

It is an Ascii code.

[hhhhhx]

...?

[red_Marvin]

As LaRoza said; 54 is the ascii (http://en.wikipedia.org/wiki/Ascii) code for the character "6".