CREATE TABLE table_4004 ("\\u2116" FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( millions ) " TEXT)

What is the last number in season of the episodes written by Dan Vebber?
SELECT MAX("#") FROM table_4004 WHERE "Written by" = 'Dan Vebber'
SELECT MAX("#") FROM "table_4004" WHERE "Written by" = 'Dan Vebber'