数列{an}满足:a1+3a2+5a3+…+(2n-1)an=(n-1)3^n+1+3,则数列{an}的通项公式为

若数列｛an｝满足a1,a2-a1,a3-a2,...是以1为首相,3为公比的等比数列,则an______ 数列{an}满足:a1+3a2+5a3+…+(2n-1)an=(n-1)3^n+1+3,则数列{an}的通项公式为 数列{an}满足:a1+3a2+5a3+…+(2n-1)an=(n-1)3^n+1+3,则数列{an}的通项公式为 数列{an}满足(a1/1)+(a2/3)+(a3/5)+…+[an/(2n-1)]=3^(n+1),则数列{an}的通项公式为? 数列{an}满足a1/1+a2/3+a3/5+…+an/(2n-1)=3^(n+1)则数列{an}的通项公式为? 已知数列{an}满足a1+2a2+3a3+…+nan=n(n+1)(n+2),则a1+a2+a3+…+an=多少? 若数列an满足,a1+a2+a3+.+an=3n-2求 an的通项公式 数列{an}满足:a1,a2-a1,a3-a2……,an-an-1构成以2为首项,3为公比的等比数列,求an 已知数列{an}满足a1,a2-a1,a3-a2,...,an-an-1,...是首项为1,公比为1/3的等比数列.求an的表达式? 已知等比数列{an}满足a1+a2=3,a2+a3=6,求这个数列的第7项a7 已知数列an满足a1+3a2+5a3+...+(2n-1)×an=(n-1)×3^n+1求an 已知数列an满足an=5sn-3 判断an是否为等比数列说明理由 求a1+a2+a3……+a2n-1 数列{an}满足a1,a2-a1,a3-a2,……,an-an-1是以1为首项,1/3为公比的等比数列,则通项公式 已知数列an满足a1+2a2+3a3+……+nan=2^n,求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 若数列{an}满足a1+2a2+3a3+~~+nan=n(n+1)(2n+1),则an=