3 |
4 |
an |
4n-1•bn |
|
|
|
an |
4n-1•bn |
2n-1 | ||
4n-1•(
|
2n-1 |
3n-1 |
1 |
30 |
3 |
31 |
5 |
32 |
2n-3 |
3n-2 |
2n-1 |
3n-1 |
1 |
3 |
1 |
31 |
3 |
32 |
5 |
33 |
2n-3 |
3n-1 |
2n-1 |
3n |
2 |
3 |
1 |
3 |
2 |
32 |
2 |
33 |
2 |
3n-1 |
2n-1 |
3n |
2 |
3 |
1-
| ||
1-
|
2n-1 |
3n |
2(n+1) |
3n |
n+1 |
3n-1 |
1 |
Sn |
A.6 | B.8 | C.10 | D.12 |
A.1 | B.2 | C.3 | D.4 |
2Sn+48 |
n |
n(an-a1) |
2 |
an+1 |
3n |
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