S2 |
b2 |
1 |
S1 |
1 |
S2 |
1 |
Sn |
|
n×(3+3n) |
2 |
1 |
Sn |
2 |
n(3+3n) |
2 |
3 |
1 |
n |
1 |
n+1 |
1 |
S1 |
1 |
Sn |
2 |
3 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
n |
1 |
n+1 |
2 |
3 |
1 |
n+1 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
9×10 |
A.0.1 | B.0.3 | C.0.6 | D.0.9 |
2 |
1+x |
fn(0)-1 |
fn(0)+2 |
A.(2n-1)2 | B.
| C.
| D.4n-1 |
a1+1 |
22 |
a2+1 |
23 |
an+1 |
2n+1 |
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