postgresql sequence getting max_value

t=# create sequence seqtest increment 1 minvalue 0 maxvalue 20;\nCREATE SEQUENCE\nt=# select * from pg_sequence where seqrelid = 'seqtest'::regclass;\n seqrelid | seqtypid | seqstart | seqincrement | seqmax | seqmin | seqcache | seqcycle\n----------+----------+----------+--------------+--------+--------+----------+----------\n 16479 | 20 | 0 | 1 | 20 | 0 | 1 | f\n(1 row)\n\n\nPostgres 10 introduced new catalog: https://www.postgresql.org/docs/10/static/catalog-pg-sequence.html\n\nalso:\nhttps://www.postgresql.org/docs/current/static/release-10.html\n\n\n . Move sequences' metadata fields into a new pg_sequence system catalog\n (Peter Eisentraut)\n \n A sequence relation now stores only the fields that can be modified by\n nextval(), that is last_value, log_cnt, and is_called. Other sequence\n properties, such as the starting value and increment, are kept in a\n corresponding row of the pg_sequence catalog.\n",

Alternatively, it can be achieved using psql prompt using the command\n\\d \n\npostgres=# \\d seqtest\n Sequence \"public.seqtest\"\n Type | Start | Minimum | Maximum | Increment | Cycles? | Cache \n--------+-------+---------+---------+-----------+---------+-------\n bigint | 0 | 0 | 20 | 1 | no | 1\n",

select min_value, max_value from pg_sequences where sequencename = 'seqtest';\n\n\nhttps://www.postgresql.org/docs/10/view-pg-sequences.html",