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_name_24 ( year INTEGER, bsu_head_coach VARCHAR )

### Question ###
What is the sum of the years with bus conner as the BSU head coach?

### Accurate SQL ###

SELECT SUM(year) FROM table_name_24 WHERE bsu_head_coach = "bus conner"