CREATE TABLE table_17680 ("Character" CLOB, "Portrayed by" CLOB, "Main cast seasons" CLOB, "Recurring cast seasons" CLOB, "# of episodes" FLOAT)

What seasons does Nick Lucas appear in?
SELECT "Recurring cast seasons" FROM table_17680 WHERE "Character" = 'Nick Lucas'
SELECT "Recurring cast seasons" FROM "table_17680" WHERE "Character" = 'Nick Lucas'