若数列{an}满足 an=2^n+1 则其前n项和sn等于

若数列【an】满足a1等于1,An+1=2an+3n,则数列的项A5 若数列(An)满足：a1=1,an+1=2an,(n∈N*),则a5= 设数列{an}满足an=2an-1+n 若{an}是等差数列,求{an}通项公式 数列{an}满足a1=1 an+1=2n+1an/an+2n 已知数列{an}满足a1=1,an+1·an=2^n 则s2012 已知数列an满足an+1/an=n+2/n且a1=1,则an= 数列{an}满足an+1+(-1)^n an=2n-1,则{an}的前60项之和是多少 已知数列{an}满足a1=33,an+1-an=2n 则求an/n的最小值 已知数列{an}满足a1=33,an+1-an=2n 则求an/n? 已知数列an满足a1=33 an+1 -an=2n 则an/n的最小值是? 已知数列{an}满足a1=33,an+1-an=2n,则an/n的最小值为 已知数列{An}满足A1=33.,An+1-An=2n,则An/n的最小值是 已知数列{an}满足a1=16,An+1-An=2n,则an/n的最小值为 详解 已知数列{an}满足a1=100,an+1-an=2n 则求an/n的最小值? 若数列an满足a1=1,an+1=2^nan...若数列an满足a1=1,a（n+1）=2^n·an,则数列an的通项公式? 已知数列 an 满足a1=1,an+1=2an+n+1,若数列{an+pn+q}是等比数列,则pq的值 数列{an}的通项公式an=n^2+kn,若此数列满足an < an +1则k范围 若数列{An}满足A1=2,nA(n+1)-(n+1)An=2,则数列{An}的通项公式A后面的n都是下标