大师作文网已知数列{An}满足A1=1,An+1={1/2An+n-1,n为奇数,An-2n,n为偶数},记Bn=A2nn∈N*
已知数列{An}满足A1=1,An+1={1/2An+n-1,n为奇数,An-2n,n为偶数},记Bn=A2nn∈N*
已知数列{an}满足a1=1,an+1=[1/2an+n.n为奇数.an-2n,n为偶数]且bn=a2n-2,n∈N+
已知数列{an}满足a1=1,an+1=｛1/2an+n,n为奇数,an-2n,n为偶数｝
已知数列{an}满足a1=1,an+1=｛1/2an+n,n为奇数,an-2n,n为偶数｝ 记bn=a2n Tn=a1+
已知数列满足：A1=1.AN+1=1/2AN+N,N奇数,AN-2N.N偶数
已知数列满足:a1=1,a(n+1)=an+1,n为奇数;2an,n为偶数,设bn=a2n-1,
已知数列{an}满足:a1=1,an+1=1/2an+n,n 为奇数,an-2n,n 为偶数.设bn=a2n+1+4n-
已知数列an满足a1=1,an+1={2n ,n为奇数 an+2 ,n为偶数 ,且a1+a3+a5+……+a2k-
已知数列{an}满足a1=1,an+1={2an n为奇数,an+2,n为偶数},且a1+a3+a5+.+a2k--=3
已知数列{an}满足a1=1,an+1=1/2an+n,（n为奇数时）,an+1=an-2n,（n为偶数时）,且bna2
已知数列{an}满足a1=1,a2=2,an+2=(an+an+1)/2,n∈N*.令bn=an+1-an,证明{bn}
已知数列{an}满足:a1+a2+a3+…+an=n-an 求证{an-1}为等比数列 令bn=(2-n)(an-1)求