Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_24649082_1 ( original_air_date VARCHAR, written_by VARCHAR )

### Question ###
How many original air dates for the episode written by David H. Goodman & Andrew Kreisberg?

### Accurate SQL ###

SELECT COUNT(original_air_date) FROM table_24649082_1 WHERE written_by = "David H. Goodman & Andrew Kreisberg"