bn |
an |
bn |
an |
(-1)n|n-15| |
n-16 |
bn |
an |
n-15 |
n-16 |
1 |
n-16 |
bn |
an |
3 |
2 |
bn |
an |
1 |
n-16 |
bn |
an |
bn |
an |
(-1)n(n-15) |
n-16 |
bn |
an |
-(n-15) |
n-16 |
1 |
n-16 |
bn |
an |
1 |
2 |
bn |
an |
13 |
14 |
bn |
an |
n-15 |
n-16 |
1 |
n-16 |
bn |
an |
1 |
15 |
14 |
15 |
bn |
an |
bn |
an |
3 |
2 |
n |
2 |
n |
an |
1 |
2 |
1 |
a1+1 |
1 |
a2+1 |
1 |
a2011+1 |
A.0 | B.1 | C.2 | D.3 |
n+1 |
2an |
bn |
2n |
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