设数列{an}满足:a1=5/6,且an=1/3a(n-1)+1/3(n∈N+,n≥2) (1
已知数列{an}满足a1=312,且3an+1=an(n∈N*,n≥1)
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an
设数列{an}满足a1+3a2+3^2a3+.3^n-1×an=n/3,a∈N+.
设数列{an},a1=3,an+1=3an-2(n∈N*)
设数列{an}满足an+1/an=n+2/n+1,且a1=2
设数列{an}满足:a1=1,an+1=3an,n∈N+.
设数列{an}中,a1=1且(2n+1)an=(2n-3)a(n-1),(n大于等于2),求{an},sn
设数列{an}满足a1+3a2+3²a3+...+3^(n-1)an=n/3,n∈N+*.(1)求数列{an}
若数列{an},a1=2/3,且a(n+1)=an+1/【(n+2)(n+1)】,(n∈N+)则通项an=?
已知数列{an}满足:a1=3/2,且an=(3n·an-1)/(2an-1+n-1)(n≥2,n∈N*).(1)求数列
设数列{an}满足a1+2a2+3a3+.+nan=n(n+1)(n+2)
1.已知数列{An}满足A1=1,An= 2A(n-1)+2(n∈N,且N≥2)