网址:http://m.1010jiajiao.com/timu_id_15456[举报]
A.an=2n-1 B.an=n2 C.an= D.an=
数列1,2,4,8,16,32,…的一个通项公式是( )
A.an=2n-1 B.an= C.an= D.an=
A.an=2n+1 B.an=n+2
C.an=2n+1或an=3 D.an=n+2或an=3