数字找规律 6,( ),7,( ),( ),7,( ),8,( ),( ),11,( ),12,( ),( ),15

问题描述:

数字找规律 6,( ),7,( ),( ),7,( ),8,( ),( ),11,( ),12,( ),( ),15

6,( 5),7,(6 ),(8 ),7,( 9),8,(10 ),(12 ),11,(13 ),12,(14 ),(13 ),15
6 7 8 9 10 11 12 13
5 6 7 8 12 13 14 15