设数列{an},a1=3,a(n+1)=3an -2 (1)求证:数列{an-1}为等比数列

设数列{an},a1=3,a(n+1)=3an -2 (1)求证:数列{an-1}为等比数列 设数列﹛an﹜中,a1+4,an=3a(n-1)+2n-1,求通项an 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 设数列an满足a1=2,a(n+1)-an=3x2的2n-1次方,求数列an的通项公式 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｝中a1=2,a下角标n=1=2an+3,则a4等于 设Sn是数列{an}的前n项和,a1=a,且Sn^2=3n^2an+S(n-1)^2,证明数列{a(n+2)-an}是常数数列设Sn是数列{an}的前n项和,a1=a,且Sn^2=3n^2an+S(n-1)^2,an≠0,n=2,3,4……证明数列{a(n+2)-an}（n≥2）是常数数列 设数列{an},a1=2,a（n+1）=an+In·（1+1/n）,求an 设数列AN满足A1等于1,3(A1+a2+~+AN)=(n+2)an,求通向公式 数列{an},a1=3,an*a(n+1)=(1/2)^n,求an 在数列｛an｝中,a1=3,a(n+1)=an+n,求an 已知数列｛an｝中,a(n+1)=an+2^n,a1=3,求an 设数列｛an｝a1=3,a（n+1）=3an-2 ①求证数列｛an-1｝是等比数列②求数...设数列｛an｝a1=3,a（n+1）=3an-2 ①求证数列｛an-1｝是等比数列②求数列｛an｝通项公式 设数列｛an｝满足a1+3a2+3的平方倍a3+..+3的n-1次方*an=n/3.a属于N*,设bn=n/an,求数列｛bn｝的前n项和Sn 设数列an满足a1=1,a2=4,a3=9,an=a(n-1)+a(n-2)-a(n-3).则a2011= 设数列{an}中,a1=2,an+1=an+n+1,则通项an=? 设a1=5,a(n+1)=√（4+an),求该数列的极限, 设数列{an}满足a1=2,a(n+1)-an=3乘以2的（2n-1}次方 1.求数列的通项公式； 2.令bn=n乘以an,求数列前n项和