sequence_catalog  sql_identifier  Name of the database that contains the sequence (always the current database) 
sequence_schema  sql_identifier  Name of the schema that contains the sequence 
sequence_name  sql_identifier  Name of the sequence 
data_type  character_data  The data type of the sequence. In
PostgreSQL, this is currently always
bigint.

numeric_precision  cardinal_number  This column contains the (declared or implicit) precision of
the sequence data type (see above). The precision indicates
the number of significant digits. It may be expressed in
decimal (base 10) or binary (base 2) terms, as specified in the
column numeric_precision_radix.

numeric_precision_radix  cardinal_number  This column indicates in which base the values in the columns
numeric_precision and
numeric_scale are expressed. The value is
either 2 or 10.

numeric_scale  cardinal_number  This column contains the (declared or implicit) scale of the
sequence data type (see above). The scale indicates the number
of significant digits to the right of the decimal point. It
may be expressed in decimal (base 10) or binary (base 2) terms,
as specified in the column
numeric_precision_radix.

maximum_value  cardinal_number  Not yet implemented 
minimum_value  cardinal_number  Not yet implemented 
increment  cardinal_number  Not yet implemented 
cycle_option  character_data  Not yet implemented 