This was all done by ear and I personally think it sounds better tuned one step
down from standard tuning.
[ Tab from: http://www.guitaretab.com/l/lil-wayne/307181.html ]
e--------------------|-----------------|-----------------|--------------|
B--------------------|-----------------|-----------------|--------------|
G--------------------|-----------------|-----------------|--------------|
D------------3-2---0-|--3-2---0--------|-----------------|--------------|
A--0---0-3-5---------|-----------5--3--|--5-3-5-0--------|--------------|
E--------------------|-----------------|-----------------|--------------|
and it repeats throughout the whole song, except for the very end it changes.