已知等差数列{an}满足a(n+1)=an+3n+2,且a1=2,求an.
已知等差数列{an}满足a(n+1)=an+3n+2,且a1=2,求an.
已知数列{an}满足a(n+1)=an+3n+2,且a1=2,求an=?
已知数列an满足a(n+1)=an+3n+2,且a1=2,求an
已知数列an满足:an+1-2an=2^n+1,且a1=2 (1)证明{an/2^n}是等差数列 (2)求数列an的
数列{an}满足a1=1,且an=an-1+3n-2,求an
已知数列{an}满足a1=2,a(n+1)=(3an-2)/(2an-1),求证{1/(an-1)}是等差数列,并求数列
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
已知数列{an}满足:a1=1,且an-a(n-1)=2n.求a2,a3,a4.求数列{an}通项an
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知等差数列{an}满足a1=3,a3=-1.(1)求{an}的通项an;(2)求{an}前n项和Sn的最大值
已知数列{an}的首项a1=1,且{an}满足an=n(n+an-1),其中n大于等于2,求{an}的通项
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值