n+1 |
2 |
bn+1 |
bn |
2n |
n-1 |
2b1 |
a1 |
2b2 |
a2 |
2bn |
an |
n+1 |
2 |
an+1 |
an |
n+1 |
n |
a2 |
a1 |
an |
an-1 |
bn+1 |
bn |
2n |
n-1 |
b3 |
b2 |
bn |
bn-1 |
2bk |
ak |
1 |
k |
1 |
k |
1 |
2 |
1 |
2 |
2bk |
ak |
1 |
k |
2b1 |
a1 |
2b2 |
a2 |
2bn |
an |
2n-1-1 |
2-1 |
2b1 |
a1 |
2b2 |
a2 |
2bn |
an |
3x-2 |
2x-1 |
1 |
2 |
1 |
2011 |
2 |
2011 |
2010 |
2011 |
2n+1 |
|
an+1 |
2 |
n2+n |
2 |
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