设数列{An}满足 A1+3A2+3^2A3+……+3^n-1An=n/3 (n属于正整数)
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+3*a2+3^2*a3+......+3^(n-1)*an=3/n,n属于正整数。 (1)求数列
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=n(n+1)(n+2)
数列{an}满足:1/a1+2/a2+3/a3+…+n/an=2n
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
已知数列an满足1/a1+2/a2+……+n/an=3/8(3∧2n-1),n属于正整数1.求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
对任意正整数n,数列an均满足a1+2a2+3a3+……+nan=n(n+1)(n+2)
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+3²a3……+3n-1次方an=n/3
设数列{an}满足a1+3a2+3^2a3+.3^n-1×an=n/3,a∈N+.