数列{an}满足a1=3,a2=6,an+2=an+1-an,求a2013

数列{an}满足a1=3,a2=6,an+2=an+1-an,求a2013 数列{an}满足a1=3,a2=6,an+2=an+1-an,求a2008 数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an 已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an 已知数列{an}满足a1+a2+...+an=n²an求其通项an 设数列AN满足A1等于1,3(A1+a2+~+AN)=(n+2)an,求通向公式 已知数列an满足a1=1,a2=3,an+1.an-1=an,求a2013 数列an满足a1=1,a2=1/3,并且an(an-1+an+1)=2an+1an-1.则数列第2012项为? 已知等比数列an中,满足a1+a2=3,a2+a3=6,则数列{An+An+1}的前8项和 设数列{an}满足lg(1+a1+a2+...+an)=n+1,求通项公式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a1=4/3,2-a(n+1)=12/an+6则1/a1+2/a2+.1/an=? 设数列｛An｝满足 A1=6,A2=4 A3=3,且数列{An+1-An}（n属于自然数）是等差数列,球An的通向公式 rt设数列｛An｝满足 A1=6,A2=4 A3=3,且数列{An+1-An}（n属于自然数）是等比数列,球An的通向公式rt 数列an满足,a1=1/4,a2=3/4,an+1=2an-an-1(n≥2,n属于N*),数列bn满足b1 数列an满足a1=1/2,a1+a2+a3……an=n^2an,则an 已知数列{an}满足a1=½,a1+a2+.+an=n²an,求其通项an 已知数列{an}满足a1=½,a1+a2+.+an=n²an,求其通项an 已知数列{an}满足：a1+a2+a3+.+an=n^2,求数列{an}的通项an.