nthcdr

(nthcdr n list)

Applies cdr to list n times and returns the resulting tail -- i.e. the sublist with the first n elements skipped. If n reaches or exceeds the list length the result is nil. (nthcdr 0 list) returns the list unchanged. A non-list met before n cdrs are taken ((nthcdr 1 5)) signals a type-error.