1 |
2 |
1 |
2 |
1 |
b1 |
1 |
b2 |
1 |
bn |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
n(n+1) |
2 |
1 |
bn |
1 |
n |
1 |
n+1 |
1 |
b1 |
1 |
b2 |
1 |
bn |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
n |
1 |
n+1 |
1 |
n+1 |
4024 |
2013 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
2 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
2 |
3 |
1 |
2 |
1 |
3 |
1 |
3 |
3 |
4 |
3 |
4 |
1 |
3 |
3 |
2 |
1 |
3 |
1 |
2×4 |
1 |
4×6 |
1 |
6×8 |
1 |
2n(2n+2) |
A.
| B.
| C.
| D.
|
an |
n |
A.(n-1)2n-2 | B.(n+2)2n-1 | C.(n+2)2n-2 | D.(n+2)2n+1-2 |
1 |
2 |
1 |
x+1 |
OAn |
i |
5 |
3 |
(n+1)an+1 |
2n |
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