an |
2an |
2n |
4n |
2 |
4 |
2×2 |
42 |
2n |
4n |
Sn |
4 |
2 |
16 |
2×2 |
43 |
2×3 |
44 |
2(n-1) |
4n |
2n |
4n+1 |
3 |
4 |
1 |
2 |
1 |
4 |
1 |
8 |
2 |
43 |
1 |
4 |
2 |
4n-3 |
2n |
4n+1 |
5 |
8 |
1 |
32 |
1-
| ||
1-
|
2n |
4n+1 |
2 |
3 |
3n+4 |
6×4n |
4 |
3 |
2 |
3 |
4 |
3 |
3n+4 |
6×4n |
8 |
9 |
6n+8 |
9×4n |
8 |
9 |
6n+8 |
9×4n |
c1 |
b1 |
c2 |
b2 |
cn |
bn |
lim |
n→∞ |
S2n+1 |
S2n |
1 |
S1 |
1 |
S2 |
1 |
Sn |
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