已知数列an满足a1=1,a2=3,an+1.an-1=an,求a2013
已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an
已知数列an满足a1=1.a2=3,an+2=3an+1-2an
已知数列{an}满足a1=1,an=a1+1/2a2+1/3a3+...+1/n-1an-1(n>1)求数列{an}的通
数列{an}满足a1>1,a(n+1)=an^2-an+1,且1/a1+1/a2+...1/a2013=2,则a2014
已知数列{an}满足关系式lg(1+a1+a2+.+an)=n,求数列{an}的通项公式
已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列{an}满足:a1=1,且an-an-1=2n,求(1)a2,a3,a4.(2)求数列{an}的通项an
已知数列{An}满足a1=1,An+1=2An+1.求A1+A2+A3+…+An的值
关于数列极限的已知数列an满足a1=0 a2=1 an=(an-1+an-2)/2 求lim(n->无穷)an
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=1/2,an+1=3an+1,求数列{an}通项公式