数列｛an｝满足an+1=an-3（n>=1）且a1=7,则a3的值是

数列｛an｝满足a1=1,且an=an-1+3n-2,求an 数列an满足a1=1/3,Sn=n(2n-1)an,求an 数列{an}满足a1=1 an+1=2n+1an/an+2n 数列[An]满足a1=2,a（n+1）=3an-2 求an 已知数列｛an｝满足a1=4/3,且an+1=4（n+1）an/3an+n 数列{an}满足a1=1,an=3n+2an-1(n≥2)求an 已知数列{an}满足a1=1,an=(an-1)/3an-1+1,(n>=2,n属于N*),求数列{an}的通项公式 已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an 已知数列{an}满足an+1=an+n,a1等于1,则an=? 已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an 已知数列an满足a1=3,An+1=2An+2^n (1)求证数列[An/2^n]是等差数列 (2)求an通项公式 已知数列an满足a1=1,a(n+1)=an/(3an+2),则an=? 已知数列{an}满足a1=1 ,an+1=3an+2的n+1次幂,求an 已知数列（an）满足a1=1.an+1=3an+2n-1,求an 数列{an]满足a1=1且an+1=an+3n次方,求an通项公式 已知数列{an}满足a1=4,3an=5an(n下-1) +1,求an 已知数列（an）满足an+1=2an+3×2∧n,a1=2求an