求数列0,1,3,2,6,7,5,4,12,13,15,14,10,11,9,8,24,25,27,26,30,31……的规律后项-前项12-141-2-1812-1-41-2-11612-141下一项为29.这个规律有问题

　　求数列0,1,3,2,6,7,5,4,12,13,15,14,10,11,9,8,24,25,27,26,30,31……的规律

　　后项-前项12-141-2-1812-1-41-2-11612-141下一项为29.

　　这个规律有问题