找规律:A:1,1,1,3,5,9,(),() B:0,1,2,3,6,11,(),()

问题描述:

找规律:A:1,1,1,3,5,9,(),() B:0,1,2,3,6,11,(),()

A:1,1,1,3,5,9,(17),(31) B:0,1,2,3,6,11,(20),(37)

17,31
20,37

A:1,1,1,3,5,9,(17),(31) 第4项起每一项等于前3项相加 B:0,1,2,3,6,11,(20),(37)