Sequence Oracle PLSQL

SQL> -- A NOCYCLE sequence
SQL>
SQL>
SQL> CREATE SEQUENCE StudentNumSeq
  2    INCREMENT BY 50000
  3    START WITH 50000
  4    MAXVALUE   99999
  5    NOCACHE
  6    NOCYCLE;
Sequence created.
SQL>
SQL>
SQL> select studentNumSeq.nextVal from dual;
   NEXTVAL
----------
     50000
SQL> select studentNumSeq.nextVal from dual;
select studentNumSeq.nextVal from dual
                                  *
ERROR at line 1:
ORA-08004: sequence STUDENTNUMSEQ.NEXTVAL exceeds MAXVALUE and cannot be instantiated
SQL> select studentNumSeq.nextVal from dual;
select studentNumSeq.nextVal from dual
*
ERROR at line 1:
ORA-08004: sequence STUDENTNUMSEQ.NEXTVAL exceeds MAXVALUE and cannot be instantiated
SQL>
SQL>
SQL> drop sequence studentNumSeq;
Sequence dropped.
SQL>
SQL>