寻找规律,括号里填几?(1)0,1,3,8,21,( ),144 (2)0,1,4,15,56,( ) (3)1,3,6,8,16,18,( ),( )(1)(2)(3)表示为:

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寻找规律,括号里填几?(1)0,1,3,8,21,( ),144 (2)0,1,4,15,56,( ) (3)1,3,6,8,16,18,( ),( )(1)(2)(3)表示为:
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寻找规律,括号里填几?(1)0,1,3,8,21,( ),144 (2)0,1,4,15,56,( ) (3)1,3,6,8,16,18,( ),( )(1)(2)(3)表示为:
寻找规律,括号里填几?(1)0,1,3,8,21,( ),144 (2)0,1,4,15,56,( ) (3)1,3,6,8,16,18,( ),( )
(1)(2)(3)表示为:

寻找规律,括号里填几?(1)0,1,3,8,21,( ),144 (2)0,1,4,15,56,( ) (3)1,3,6,8,16,18,( ),( )(1)(2)(3)表示为:
0,1,3,8,21,(55 ),144 规律是前一个数乘以3减区前一个数
0,1,4,15,56,( 209) 规律是
1*4-0=4
4*4-1=15
15*4-4=56
56*4-15=209
209*4-56=780
1,3,6,8,16,18,(36 ),( 38)规律是加2,乘2,加2,乘2