数列{an}满足an=n(9/10)^n,试判断数列{an}中是否存
已知数列{an}中,a1=1,满足an+1=an+2n,n属于N*,则an等于
数列an满足an+1=3an+n,是否存在适当的a1,使{an}是等差数列,说明理由
数列{an}满足a1=1 an+1=2n+1an/an+2n
数列an的前n项和Sn=1/2n^2-2n,数列满足bn=an+1/ an.判断该数列是否为等差数列,并证明你的结论
已知数列{an}满足an+1=2an+n+1(n∈N*).
数列{an}的前n项的和Sn=n2-10n(n属于N*),数列{bn}满足bn=(an+1)/an(n属于N*),(1)
已知数列前n项和为Sn,且满足Sn=2an-3n(n属于正整数) 1求数列an的通项公式 2数列an中是否存在连续的三项
数列{an}满足a1=1,且an=an-1+3n-2,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an+1=an+n,a1等于1,则an=?
已知数列{an}满足(a(n+1)+an-3)/(a(n+1)-an+3)=n且a2=10
数列an中,(n+1)an+1-nan方+an+1an=0,求an