已知A1=1,An+1/An=n/n+1,求An.

已知A1=1,An=2An-1+n（n>1）,求An. 已知A1=1,An+1/An=n/n+1,求An. 已知a1=1,an+1=n乘以an/n+1 求an? 已知数列{an}满足a(n+1)=an+n,a1=1,则an= 已知数列｛an｝中,a(n+1)=an+2^n,a1=3,求an 已知数列{an}中,a1=1,an+1=3an/(an+3)(N∈N*),求通项an, 已知数列an中,a1=1,an/an-1=n+1/n,n大于等于2,求an 已知数列{an}满足an+1=an+n,a1等于1,则an=? 已知数列an,a1=1 an+1-an=2的n次幂求an 已知数列an中,a1=1,an+1=an+n,求an 已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 已知{an}满足a1=1.an=3*n+2An-1,求an 已知数列{An}满足A1=0.5,A1+A2+…+An=n^2An(n∈N*),试用数学归纳法证明:An=1/n(n+1) 已知a1=2 a(n+1)=2an+2^n+3^n 求an 已知数列｛an｝中a1=6,且an-an-1=(an-1/n)+n+1(n属于N*,n≥2）,求an 已知数列an满足a1=4,an=n+1/n-1乘以an-1则an= 已知数列{an}满足a1=1/2,an+1=an+1/n的平方+n求an 已知数列an满足a1=1/2,an+1=an+1/n²+n,求an