okay so there is no bass untill about 2:57 but the build up starts like this
|-------------------------------|
|-------------------------------|   (x2) in quarter notes
|----------3333333333-----------|
|0000000000----------2222222222-| 

then it goes into the main riff it just basically follows the electric guitar

|-----------------------------|
|-----------------------------| (repeat until end of song it kind of follows the la la la's)
|3-33-----------3-33----------|
|-----2-22-0-00------2-22-0-00|