Who were the writers for production code 2t6268?
CREATE TABLE "table1_17467447_1" (
  "series_num" real,
  "episode_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_viewers_million" text,
  "original_airdate" text,
  "production_code" text
);
SELECT "written_by" FROM "table1_17467447_1" WHERE "production_code"='2T6268';