CREATE TABLE table_15799 ("Character" TEXT, "Portrayed by" TEXT, "Main cast seasons" TEXT, "Recurring cast seasons" TEXT, "# of episodes" FLOAT)

How many episodes had the character of Nick Lucas?
SELECT SUM("# of episodes") FROM table_15799 WHERE "Character" = 'nick lucas'
SELECT SUM("# of episodes") FROM "table_15799" WHERE "Character" = 'nick lucas'