数列a1=1,an=2an-1+1（n≥2,n属于N^*）的第5项是?

数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an 数列{an}满足a1=1 an+1=2n+1an/an+2n 数列｛an},a1=1,an+1=2an-n^2+3n,求｛an｝. 数列{an}中,a1=1,an+1/an=n/n+2,求an 设数列{an}中,a1=2,an+1=an+n+1,则通项an=? 数列an集合中,a1=2,an+1=an+(2n+1),求an. 数列{an}中,a1=35,an+1-an=2n-1,求an 已知数列an,a1=1 an+1-an=2的n次幂求an 数列｛an｝满足a1=1,且an=an-1+3n-2,求an 数列{an},a1=2,an+1(下标)=an下标+n+1 求通项an下标 在数列an中,a1=2 an+1=an+3n则an= 已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 一道数学题、、数列{an}：a1=4,an=3an-1+2n-1,n≥2求an. 数列{an}满足a1=1,an=3n+2an-1(n≥2)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 数列an满足a1=1/3,Sn=n(2n-1)an,求an 数列{an}中,a1=2,an+1=an+ln(n+1/n),求通项公式 数列{an},a1=3,an*a(n+1)=(1/2)^n,求an