求数列数列{an}满足a1=1,且n≥2时,an=a1+2a2+3a3+•••+(n-1)an-1的通项公式求数列{an}满足a1=1,且n≥2时,an=a1+2a2+3a3+•••+(n-1)an-1的通项公式

数列｛an｝满足a1=1,且an=an-1+3n-2,求an 已知数列{an}满足an+Sn=n,数列{bn}满足b1=a1,且bn=an-a(n-1),(n≥2）,试求数列{bn}的前n项的和Tn 数列{An}满足a1=1/2,a1+a2+..+an=n方an,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 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a(n+1)=an+3n+2,且a1=2,求an=? 在数列an中,a1=1,且满足a（n+1）=3an +2n,求an 已知数列an满足a(n+1)=an+3n+2,且a1=2,求an 求数列数列{an}满足a1=1,且n≥2时,an=a1+2a2+3a3+•••+(n-1)an-1的通项公式求数列{an}满足a1=1,且n≥2时,an=a1+2a2+3a3+•••+(n-1)an-1的通项公式 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3a(n+1)=2an-4,且a1=1/5,求an 已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an 数列{an}满足a1=2,a(n+1)=2an+n+2,求an 数列an满足a1=1/3,Sn=n(2n-1)an,求an 五道高一数学题,在线等1.数列{an}满足:a1=2.当n≥1时,有a(n+1)=an/2+3,求{an}的通项公式an2.已知a1=1,a2=3且a(n+2)-2a(n+1)+an=a,求an3.数列{an}满足a1=1,a(n+1)=4an+(3n+1),求an4.数列{an}满足递推关系：an=a(n-2)+2,且a1= 数列{an}满足a1=1,an=3n+2an-1(n≥2)求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=2,an=a(n-1)+2n,（n≥2）,求an