2n+1an | ||
(n+
|
2n |
an |
1 |
n(n+1)an+1 |
5 |
16 |
1 |
2 |
2n+1an | ||
(n+
|
2n+1 |
an+1 |
2n |
an |
1 |
2 |
2n |
an |
1 |
2 |
n2-1 |
2 |
2n |
an |
n2+1 |
2 |
2n+1 |
n2+1 |
2n+2 |
(n+1)2+1 |
1 |
n(n+1)an+1 |
1 |
2 |
1 |
2n+1 |
1 |
n×2n |
1 |
(n+1)×2n+1 |
1 |
2 |
| ||||
1-
|
1 |
2 |
1 |
2 |
1 |
(n+1)×2n+1 |
1 |
2 |
1 |
2 |
n+2 |
n+1 |
1 |
2 |
n+2 |
n+1 |
1 |
2 |
1 |
n+1 |
1 |
2 |
n+2 |
n+1 |
1 |
2 |
1+2 |
1+1 |
3 |
8 |
5 |
16 |
1 |
2 |
1 |
2 |
n+2 |
n+1 |
1 |
2 |
5 |
16 |
1 |
2 |
A.6 | B.20 | C.7 | D.5 |
1 |
Sn-1 |
1 |
Sn |
1 |
2 |
bn+2 |
(n+5)bn-1 |
b | 22 |
b | 23 |
b | 2n |
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