5=3*2-1
14=5*3-1
55=14*4-1
274=55*5-1
1643=274*6-1
11500=1643*7-1
答案是1643
找规律填空3 5 14 55 274 ( ) 11500
找规律填空3 5 14 55 274 ( ) 11500
1643
1643
数学人气：139 ℃时间：2020-04-30 18:56:02
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