1 |
a1a2 |
1 |
a2a3 |
1 |
a3a4 |
1 |
anan+1 |
|
1 |
30 |
1 |
anan+1 |
1 |
(2n+1)(2n+3) |
1 |
2 |
1 |
2n+1 |
1 |
2n+3 |
1 |
30 |
1 |
2 |
1 |
5 |
1 |
7 |
1 |
2n+1 |
1 |
2n+3 |
1 |
30 |
1 |
2 |
1 |
5 |
1 |
2n+3 |
2 |
15 |
1 |
2(2n+3) |
a6 |
a4 |
7 |
11 |
S11 |
S7 |
A.-1 | B.1 | C.2 | D.
|
1 |
(2n-1)•(2n+1) |
7 |
15 |
A.6 | B.7 | C.8 | D.9 |
n |
an+1 |
1 |
nan |
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