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}中满足(An+1-An)(An+1+An)=16,且a1=1,an 已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an 已知数列{an}满足An+1=2^nAn,且A1=1,则通项an 已知数列｛an｝满足an=an+1 -lg2,且a1=1,则通项公式为? 已知数列{an}满足：an+1=an+n,且a61=2002,则a1等于 已知数列,an满足a1=1,a3+a7=18,且an-1+an+1=2an 已知数列an满足an+1/an=n+2/n且a1=1,则an= 已知数列{an}满足,an+2=an+1-an,且a10=-1,a9=0,求a1 已知数列｛an｝满足a1=4/3,且an+1=4（n+1）an/3an+n 已知数列[an]满足An+1=1+an /3-an ,且a1=1/3,求证数列[1/(an -1）]是等差数列,并求an 已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an 数列｛an｝满足a1=1,且an=an-1+3n-2,求an 数列[An]满足An+1-An+3=0,且A1=-5.求An. 已知递增数列{an}满足a1=1,(2an+1)=an+(an+2),且a1,a2,a4成等比数列.求an 已知数列{an}满足:a1=1,且an-an-1=2n,求(1)a2,a3,a4.(2)求数列{an}的通项an 已知数列an满足:an+1-2an=2^n+1,且a1=2 (1)证明{an/2^n}是等差数列 (2)求数列an的 已知数列{an}满足(n+1)an+1=an+n,且a1=2,则a2010=? 已知数列an满足an=1+2+...n,且（1/a1）+(1/a2）+...(1/an)