找規律:0,1,2,3,6,7,14,15,30,,,63,64,128... ... 在括號里填数字.

找規律:0,1,2,3,6,7,14,15,30,,,63,64,128... ... 在括號里填数字.

0,1,2,3,6,7,14,15,30,,,63,64,128......