1 |
anan+1 |
|
|
1 |
anan+1 |
1 |
(n+1)(n+2) |
1 |
n+1 |
1 |
n+2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
n+1 |
1 |
n+2 |
1 |
2 |
1 |
n+2 |
n |
2(n+2) |
n |
2(n+2) |
n |
2(n+2)2 |
n |
2(n+2)2 |
1 | ||
2(n+
|
1 |
2(4+4) |
1 |
16 |
1 |
16 |
1 |
2 |
11 |
2 |
6 |
(2an-11)(2bn-1) |
k |
57 |
a1 |
2 |
a2 |
22 |
an |
2n |
A.3 | B.4 | C.6 | D.12 |
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