已知数列an满足a1=3,nan=(n+1)a（n+1）←这是下标,求通项an

已知数列｛an｝满足a1=1,a（n+1）=nan n+1是角标 已知数列an满足a1+2a2+3a3+……+nan=2^n,求an 已知数列an满足a1+2a2+3a3+...+nan=n(n+1)*(n+2),则数列an的前n项和Sn=? 已知数列{an}满足a1+2a2+3a3+…+nan=n(n+1)(n+2),则a1+a2+a3+…+an=多少? 已知数列{an}满足a1+2a2+3a3+...+nan=n(n+1)(2n+1),则该数列an=? 已知数列{an}满足：a1+2a2+3a3+...+nan=(2n-1)*3^n(n属于正整数)求数列{an}得通项公式 已知数列{an}满足a1+2a2+3a3+...+nan=n(n+1)(n+2),则an= 过程详细点 若数列{an}满足a1+2a2+3a3+~~+nan=n(n+1)(2n+1),则an= 设数列｛an｝满足a1+2a2+3a3+.+nan=n(n+1)(n+2)求通项an 数列An 满足 a1+2a2+3a3+.+nan=n(n+1)(n+2) 求an 数列an满足a1+2a2+3a3+...+nan=n(n+1)(n+2) 求通项an急,谢谢解惑 已知数列{an}满足a1=1,且nan+1=(n+1)an(n∈N*),则数列an的通项公式是（） 已知数列an满足a1=3,nan=(n+1)a（n+1）←这是下标,求通项an 已知数列an满足an+1=nan,a1=2,求an通项 已知数列{an}满足An+1=2^nAn,且A1=1,则通项an 已知数列{An}满足：A1=1,An=nAn-1+(n-1)!(n>=2),求数列{An}的通项公式. 已知数列{An}满足：a1=3/2,且an=3nAn-1/(2An-1+n-1)(n≥2,n∈N*),证明：对一切正整数n,不等式A1*A2*...*An已知数列{An}满足：a1=3/2,且an=3nAn-1/(2An-1+n-1)(n≥2,n∈N*),证明：对一切正整数n，不等式A1*A2*...*An 已知数列{an}满足2a1+2^2a2+2^3a3+...+2^nan=（4^n）-1,则{an}的通项公式