python sqlite executemany statement error: ValueError: parameters are of unsupported type

What I want to do seems like it should be pretty straightforward but I just can't get past the errors I'm getting. Basically, I create a list, create a database table and then want to insert the elements of the list into the table. Here's what I've got:

F_wheel_data = [1,3,1,3,1,3,1,3,1,3,2,1,3,1,3,1,3,1,3,1,3,4]
curs.execute('CREATE TABLE F_wheel (url_num INTEGER NOT NULL)')
curs.executemany('INSERT INTO F_wheel VALUES (?)', F_wheel_data)

And the error I get is:

curs.executemany('INSERT INTO F_wheel VALUES (?)', F_wheel_data)
ValueError: parameters are of unsupported type

What gives?