求数列：4,18,56,130,( )
A.252 B.254 C.253 D.250
人气：447 ℃ 时间：2020-04-18 11:21:35
解答
4=2*(1^3+1)
18=2*(2^3+1)
56=2*(3^3+1)
130=2*(4^3+1)
下一个就是2*(5^3+1)=252
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