已知数列{an}满足an•an-2=an-1(n>2,n∈N),且a1=2,a2=3,则a2013=_.

问题描述:

已知数列{an}满足an•an-2=an-1(n>2,n∈N),且a1=2,a2=3,则a2013=______.

∵数列{an}满足an•an-2=an-1(n>2,n∈N),且a1=2,a2=3,∴a3•a1=a2,解得a3

3
2

a4•a2=a3,解得a4=
1
2

a5•a3=a4,解得a5=
1
3

a6•a4=a5,解得a6
2
3

a7•a5=a6,解得a7=2.
….
∴an+6=a1
∴a2013=a335×6+3=a3
3
2

故答案为
3
2