How many seasons did the Div J1 have the Emperor's cup in the 3rd round with Tms of more than 18?
CREATE TABLE "record_as_j_league_member" (
  "season" real,
  "div" text,
  "tms" real,
  "pos" real,
  "attendance_g" real,
  "emperor_s_cup" text
);
SELECT COUNT("season") FROM "record_as_j_league_member" WHERE "emperor_s_cup"='3rd round' AND "div"='j1' AND "tms">18;