设数列｛an｝满足a1+3a2+3的平方倍a3+..+3的n-1次方*an=n/3.a属于N*,设bn=n/an,求数列

设数列｛an｝满足a1+3a2+3平方a3+...+3n-1an=n/3,n属于N*.求数列｛an｝的通项公式? 设数列{an}满足a1+3a2+3的平方a3+.+3的n-1次方an=n/3. （1）求数列{an}的通项. 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+2a2+3a3+.+nan=2^n(n属于N*）求数列an的通项公式 设bn=n^2an,求数列bn 设数列an满足a1+3a2+3^2a3+……+3^(n-1)an=n/3,a是正整数,设bn=n/an,求数列bn的前n 设数列an满足a1+2a2+3a3+.+nan=2^n 1求数列a的通项 2设bn=n^2an 求数列的前n项和Sn求大 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 设数列{An}满足A1+3A2+3^2*A3+...+3^(n-1)*An=n/3,a属于正整数. 设数列an满足a1+3a2+3²a3+.+3的n-1次方 an=n/3 求an的通项公式 设数列｛an｝满足a1+2a2+3a3+.+nan=n(n+1)(n+2) 设数列{an}满足a1+3a2+3^2a3+.3^n-1×an=n/3,a∈N+. 设数列{an}满足a1+a2/2+a3/3+.+an/n=n^2-2n-2,求数列{an}的通项公式