若数列{an}满足:a1=1,an+1=2an(n∈N+),则a5=______.
已知数列(an)满足a1=1,an+1=2an/an+2(n∈N*) 求a2,a3,a4,a5 猜想数列(an)的通项公
已知数列{an}满足:a1=3,an+1=(3an-2)/an ,n∈N*.(Ⅰ)证明数列{(an-1)/an-2
1.若数列an满足:a1=1,a(n+1)=2an(n∈N+),则a5=?前8项的和S8=?
1.数列{an}满足a1+a2+……+an=[4-(-2)^n]/3,n∈N*,则1/a1+1/a3+1/a5+……1/
已知数列{an}满足a1=1,an+1=2an/(an+2)(n∈N+),则数列{an}的通项公式为
已知数列{an}满足a1=1,a2=2,an+2=an+an+12,n∈N*.
设数列{an}满足:a1=1,an+1=3an,n∈N+.
数列{an}满足a1=1 an+1=2n+1an/an+2n
在数列{an}中,若a1=1,且对所有n∈N+满足a1a2…an=n2,则a3+a5=( )
已知数列{an}满足an+an+1=2n+1(n∈N*),求证:数列{an}为等差数列的充要条件是a1=1.
在数列{an}中,a1=1,a2=2,an=an-1-an-2(n∈N*,n≥3),则a2010=______.
数列{an}中a1=1,对于n>1(n∈N*)有an=3an-1+2,则an=______.