设数列〔an〕满足a1=1,a2=5/3(5分之3),an+2=5/3an+1-2/3an.求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=1,a2=5/3(5分之3),an+2=5/3an+1-2/3an,(n属于N※).
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
设数列an满足a1=2 an+1-an=3-2^2n-1
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
设数列{an}满足a1+3 a2+3^2 a3+……+3^n-1 an=n/3,a属于N* 求数列{an}的通项
设数列an满足a1+3a2+3^2a3+.+3^n-1an=n/3,n∈N*,求数列an的通项公式