设数列{an}满足a1=0,2an+1=1+anan+1 （1）求证：为等差数列,并求通项公式an （2）记 ,求数列{bn}的前n

设b＞0,数列an满足a1=b,an=nban-1/an-1+n-1（n≥2）求数列an通向公式. 设b＞0,数列an满足a1=b,an=nban-1/an-1+n-1（n≥2）求数列an通向公式 设数列AN满足A1等于1,3(A1+a2+~+AN)=(n+2)an,求通向公式 设数列{an}满足a1=1, an=(4an-1 +2)/(2an-1 +7) ,则通项xn=? 关于数列、等差数列的题目设数列an满足an+1=an-2且a1=241）判断an是什么数列2）若an 数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an 设数列{an}满足lg(1+a1+a2+...+an)=n+1,求通项公式an 已知数列{an},{bn}满足a1=2,2an=1+2an*an+1,设{bn}=an-1求数列{1n}为等差数列急！！！ 数列an满足a1=0,An+1=an+2n求a2009 已知数列an满足a1=1,1/an+1=根号1/an^2+2,an>0,求an 数列{an}满足:a1=1,an>0,an+1^2-an^2=1,那么an 数列{an}满足:a1=1,an>0,an+1^2-an^2=1,那么an 已知数列｛an｝满足a1=1,an+1 -an+2an+1•an=0求通项 数列an满足,a1=8且8an+1an-16an+1+2an+5=0 数列an满足an+1=根号(an^2+1)+an,a1=a>0,求an通项公式 数列{an}满足a1=1 an+1=2n+1an/an+2n 数列[An]满足An+1-An+3=0,且A1=-5.求An. 数列an满足a1=2,an+1=4an+9,则an=?