RFC2445/RFC2446: SEQUENCE property

Hi all,

I have a doubt related to SEQUENCE property.

Can recurrence instances of a vevent component have a 
larger(or different) SEQUENCE when the main vevent 
component (that describes the recurrence set) has a 
smaller SEQUENCE?
or
Is SEQUENCE property for a vevent component 
different than the SEQUENCE property of an individual 
vevent recurrence instance? If they are different, how are 
they related?

For example an instance update might change only the 
SEQUENCE of the instance, whereas the main vevent 
does not change.

Please comment.

Regards,
Shriram V.