数列满足an=3a(n-1)+3^n-1 求证{an-3^n}不是等差数列

数列[An]满足a1=2,a（n+1）=3an-2 求an 求一道很简单的数列题数列｛a｝满足an=（n^2+n+1)/3求an+1 已知数列{an}满足条件a1=3,且a( n+1)-an=(20)^n+n,求通项公式已知数列{an}满足条件a1=3,且a( n+1)-an=(2)^n+n,求通项公式 数列满足an=3a(n-1)+3^n-1 求证{an-3^n}不是等差数列 数列{An}满足A1=1,A(n+3)=An+3,A（n+2)=An +2 在数列an中,a1=1,且满足a（n+1）=3an +2n,求an 数列{an}满足a0是常数,an=3(n-1)-2a(n-1),求an 已知数列｛an｝满足a(n+1)=an+3n+2,且a1=2,求an=? 已知数列an满足a(n+1)=an+3n+2,且a1=2,求an 数列证明题一题设数列{An}满足：A1=1,且当n∈N*时,An^3+An^2×[1－A(n+1)]+1=A(n+1）求证：数列{An}是递增数列. 已知数列an满足a1=1,a(n+1)=an/(3an+1) 求数列通项公式 数列{an)满足an=4a(n-1)+3,a1=0,求数列{an}的通项公式 数列an满足a1=1/3,Sn=n(2n-1)an,求an 数列{an}满足递推式an=3a(n-1)+3^n-1(n>=2),又a1=5,求数列{an}的通项公式 数列{An}满足A1+3A2+3^2*A3+.+3^N-1*An=n/3 A属于N紧急求数列{An}的通项 已知数列{an}满足a1=1,an=3^n+2a(n-1),(n>=2),求数列的通项an. 已知数列an满足an=4a(n-1)+3n-4,且a1=3,证明数列an+n为等比数列 设数列an满足a1=2,a(n+1)=3an+2^(n-1),求an2,设数列an满足a1=2,a(n+1)=3an+2n,求an