已知｛an｝满足a1＝1,a(n+1)an＋2(an+1)＝an(n∈N*)(1)求数列｛an｝的通项公式；(2)求证a2/a1 ＋ a3/a2 ＋ …＋a(n+1)/an ＜n/2

已知数列{an}满足a(n+1)=an+n,a1=1,则an= 已知{an}满足a1=1,a(n+1)=2an+2,求an 已知数列{an}满足a(n+1)=an+lg2,a1=1,求an 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:a1=1,an-a(n-1)=n n大于等于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=100,a(n+1)-an=2n,则(an)/n的最小值为 已知数列an满足a1=2,an=a(n-1)+2n,（n≥2）,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{a}满足a1=1/2,a（n+1）=an+1/(n^2+n),求an 已知数列{an}满足a1=1,3a(n+1)+an-7 已知数列{an}中满足a1=1,a(n+1)=2an+1 (n∈N*),证明a1/a2+a2/a3+…+an/a(n+1) 已知数列{an}满足a1=a,a2=b,a(n+1)=a(n+2)+an,求a2012 已知数列满足a1=1,an-a(n-1)=n-1,求其通项 已知数列｛an｝满足a1=1,a（n+1）=nan n+1是角标 已知{an}满足a(n+1)=2的n次方*an且a1=1求an 已知等差数列{an}满足a(n+1)=an+3n+2,且a1=2,求an.雪地跪拜! 已知数列an满足a(n+1)=an+3n+2,且a1=2,求an