数列an,a1=4,an+1=5^n*an,求an
数列an,a1=4,an+1=5^n*an,求an
数列{an},a1=1,an+1=2an-n^2+3n,求{an}.
数列{an}中,a1=35,an+1-an=2n-1,求an
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
数列an,a1=4,Sn+S(n+1)=5/3an+1,an
设数列{an}中,a1=2,a(n+1)=an+n+1,求an
已知数列{an},a1=1,an+1-an=2^n,求数列{an}通项公式
数列an中 a1=1 a(n+1)=2an\(an+2) 求数列通项公式an
已知数列{an}中a1=1,an+1-an=3n,求数列{an}的通项公式.
数列累加法在数列{an}中,a1=1,an=an-1+n 求an
数列{an}中,a1=-27,an+1+an=3n-54,求数列{an}的通项公式