已知数列An+1=An+3n+1,A1=1,求An的通项公式

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=4,an+1+an=6n+3,求证数列an-3n是等比数列,求证数列an的通项an 已知数列｛an}中a1=1,an+1-an=3n,求数列｛an}的通项公式. 已知数列｛an}中a1=2,an+1-an=3n,求数列｛an}的通项公式. 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 已知数列｛an｝满足a1=4/3,且an+1=4（n+1）an/3an+n 已知数列{an}满足a1=1,an=(an-1)/3an-1+1,(n>=2,n属于N*),求数列{an}的通项公式 已知a1=1,na(n+1)=(n+3)an,则数列通项an 数列｛an},a1=1,an+1=2an-n^2+3n,求｛an｝. 已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an 已知数列{an}满足a(n+1)=an+n,a1=1,则an= 已知数列an满足a1=1,a(n+1)=an/(3an+1) 求数列通项公式 已知数列{an}中a1=3且an+1=an+2n.求数列的通项公式 已知数列{an}满足:a1=3,an=Sn-1+2n,求数列an及sn