来自沈绿涟的问题
找规律填数15,16,13,13,11,22,(),(),7,().
找规律填数15,16,13,13,11,22,(),(),7,().


找规律填数15,16,13,13,11,22,(),(),7,().
找规律填数15,16,13,13,11,22,(),(),7,().
15,16,13,13,11,22,(9),(19),7,(28).
15131197依次减2
1613221928依次减3加9