已知数列{an}满足a(n+2)=a(n+1)-an,a1=1,a2=2,求a2005

周期性数列问题i已知数列｛an}满足a(n+1)=2an (0 已知数列{a}满足a1=1/2,a（n+1）=an+1/(n^2+n),求an已知数列{a}满足a1=1/2,a（n+1）=an+1/(n^2+n),求an 已知数列an满足a1=2,an=a(n-1)+2n,（n≥2）,求an 已知数列{an}满足a1=33,a(n+1)-an=2n,则an/n的最小值 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,an-a(n-1)=n n大于等于2 求an 已知数列an满足a1=100,a(n+1)-an=2n,则(an)/n的最小值为 已知数列{an}满足a1=2,a(n+1)-an=a(n+1）*an,则a31=? 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 已知数列{an}满足a(n+1)=an+n,a1=1,则an= 已知数列{an}满足a1=a,a2=b,a(n+1)=a(n+2)+an,求a2012 已知数列an中,满足a1=6a,a(n+1)+1=2[(an)+1],n属于N*,求数列an的通项公式 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 已知数列{An}满足A(n+1)=【2An (0 已知数列{an}满足a(n+2)=a(n+1)-an,a1=1,a2=2,求a2005 已知数列{an}满足,a1=1,a2=2,a(n+1)=a(n+2)+an,求a2011? 已知数列{an}满足a1=1,a2=3,a(n+2)=a(n+1)-an,求S2012