6,14,30,62() ()找规律
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6,14,30,62()()找规律6,14,30,62()()找规律6,14,30,62()()找规律an=2^(n+2)-2a1=2^3-2=8-2=6a2=2^4-2=16-2=14a3=2^5-
6,14,30,62() ()找规律
6,14,30,62() ()找规律
6,14,30,62() ()找规律
an = 2^(n+2) - 2
a1 = 2^3 - 2 = 8 - 2 = 6
a2 = 2^4 - 2 = 16 - 2 = 14
a3 = 2^5 - 2 = 32 - 2 = 30
a4 = 2^6 - 2 = 64 - 2 = 62
a5 = 2^7 - 2 = 128 - 2 = 126
a6 = 2^8 - 2 = 256 - 2 = 254
6×2+2=14
14×2+2=30
所以括号内为
62×2+2=126
126×2+2=254
满意请采纳,O(∩_∩)O谢谢~
126,254 6——14 +8
14——30 +8x2
30_62 +8x2x2
6=2的三次方-2
14=2的四次方-2
……
所以后面两个数是126、254
56,14,30,62(126) (254)
6,14,30,62() ()找规律
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