CREATE TABLE table_20726262_3 (no_in_season VARCHAR, writtenby VARCHAR)

How many numbers in the season were written by Brett Conrad & Liz Sagal?
SELECT COUNT(no_in_season) FROM table_20726262_3 WHERE writtenby = "Brett Conrad & Liz Sagal"
SELECT COUNT("no_in_season") FROM "table_20726262_3" WHERE "Brett Conrad & Liz Sagal" = "writtenby"