Select multiple ids from a PostgreSQL sequence

Question

Is there a concise way to select the nextval for a PostgreSQL sequence multiple times in 1 query? This would be the only value being returned.

For example, I would

Answer 1

My current best solution is:

SELECT NEXTVAL('mytable_seq') AS id
UNION ALL
SELECT NEXTVAL('mytable_seq') AS id
UNION ALL
SELECT NEXTVAL('mytable_seq') AS id;

Which will correctly return 3 rows... but I would like something that is minimal SQL for even as much as 100 or more NEXTVAL invocations.