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已知数列{an}的通项公式,则a4等于A.1B.2C.0D.3
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已知数列{a
n}的通项公式
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SxMdGkGc6r8hSDFGXT17df82wo5E8Jd+NK9sIPvHF9FgTWTsMKXVfeKkcaOUZWuwnZW5wBsi+nCR
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Lod2ZVVo7I/qzuola8+Yt8cMgciunJ111artmEjgiHQ9WGTD0ybsHOgfMzItkXd+c+yoa7tai4/f
HzAnin2uyBZ0V+Yhvmrxu5hAL+MQiFpk3ItfeDptvIDDRs/4IzMc7J6uWb6A10wbnrz2GOZH17XH
cWXg09ijw8hhCHxvofjffr9nXWFRrQwDM5FrCTczrOKHkChnSwsgQCZOQQBMovTi7t4wcooHtOjr
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)
,则a
4等于( )
A.1
B.2
C.0
D.3
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