找规律, 2,2,4,8,14,26,48,88___? 1,-2,-3,4,5,-6,-7,8,9``````,2005,-2006,-2007,2008的和是

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找规律,2,2,4,8,14,26,48,88___?1,-2,-3,4,5,-6,-7,8,9``````,2005,-2006,-2007,2008的和是找规律,2,2,4,8,14,26,48,

找规律, 2,2,4,8,14,26,48,88___? 1,-2,-3,4,5,-6,-7,8,9``````,2005,-2006,-2007,2008的和是
找规律, 2,2,4,8,14,26,48,88___? 1,-2,-3,4,5,-6,-7,8,9``````,2005,-2006,-2007,2008的和是

找规律, 2,2,4,8,14,26,48,88___? 1,-2,-3,4,5,-6,-7,8,9``````,2005,-2006,-2007,2008的和是
从第4个数开始,每个数等于前三个数的和.2+2+4=8 2+4+8=14 8+14+26=48 14+26+48=88 所以:26+48+88=162
1,-2,-3,4,5,-6,-7,8,9``````,2005,-2006,-2007,2008
=1+2×(2009-1)/2-2009
=0
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