设数列{an}满足a1=1a2=2an=1/3(an-1+2an-2)求an
已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an
数列{an}满足a1=1,且an=an-1+3n-2,求an
设数列【an】满足a1=1,3(a1+a2+a3+······+an)=(n+2)an,求通项an
【急!】设{an}是由非负整数组成的数列,满足a1+0,a2=3,(an+1)( an )=(an-1)( an-2+2
一直数列{An}满足A1=1/2,A1+A2+…+An=n^2An
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
数列{an}满足 a1=2,a2=5,an+2=3an+1-2an.(1)求证:数列{an+1-an}是等比数列; (2
设数列an满足a1=2 an+1-an=3-2^2n-1
一直数列{an}满足a1=0,an=(an-1 +4)/(2an-1) ,求 an
设数列an满足a1=a2=1,a3=2,且对正整数n都有an·an+1·an+2·an+3=an+an+1+an+2+a
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
数列an满足a1=2,an+1=an²求an