数列1,1,2,3,5,8,13,x,34,55

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数列1,1,2,3,5,8,13,x,34,55

数列1,1,2,3,5,8,13,x,34,55
数列1,1,2,3,5,8,13,x,34,55

数列1,1,2,3,5,8,13,x,34,55
规律:前两项的和为下一项.
1,1,2,3,5,8,13,21,34,55.