题文
数列{an}满足an+an+1=
(n∈N*),a2=2,Sn是数列{an}的前n项和,则S2015为( )
| A.502 | B.504 | C.![]() |
D.2015 |
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数列{an}满足an+an+1=
(n∈N*),a2=2,Sn是数列{an}的前n项和,则S2015为( )
| A.502 | B.504 | C.![]() |
D.2015 |
试题篮
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