已知数列{An}满足A1=1,A3+A7=18,且A(n-1)+A(n+1)=2An若Cn=2^n-1*An,求{Cn}
已知数列{An}满足A1=1,A3+A7=18,且A(n-1)+A(n+1)=2An若Cn=2^n-1*An,求{Cn}
已知数列an,bn,cn满足[a(n+1)-an][b(n+1)-bn]=cn
已知数列{an}满足a1=6,an+1-an=2n,记cn=a
已知数列{an}满足:a1=1,且an-a(n-1)=2n.求a2,a3,a4.求数列{an}通项an
已知数列{an}满足a1=1,a3+a7=18,且an-1+an+1=2an(n≥2).
数列{an}中,已知a1=2,an+1=an+cn(n∈N*,常数c≠0),且a1,a2,a3成等比数列
已知数列{an},{cn}满足条件:a1=1,an+1=2an+1,cn=1(2n+1)(2n+3).
数列an=2^(n-1),数列cn满足,对任意正整数c1/a1+c2/a2+...+cn/an=22+(2n-11)/2
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值
已知数列an满足a1=1,a3+a7=18,且(an-1)+(an+1)=2an(n>=2)
已知数列an,bn,cn满足[a(n+1)-an][b(n+1)-bn]=cn 若数列an的通项公式为an=2n-1 设
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an