4 |
9an+12 |
1 |
n |
2 |
n |
n |
n |
1 |
c1c2 |
1 |
c2c3 |
1 |
cncn+1 |
1 |
2 |
4 |
4×9n+12 |
1 |
9n+3 |
1 |
9n+3 |
1 |
91-n+3 |
1 |
9n+3 |
9n |
9+3×9n |
1 |
3 |
1 |
n |
2 |
n |
n |
n |
n |
n |
n-1 |
n |
1 |
n |
n |
n |
1 |
n |
n-1 |
n |
n-1 |
n |
1 |
n |
n |
n |
n+1 |
6 |
1 |
n |
2 |
n |
n |
n |
n+1 |
6 |
1 |
cncn+1 |
36 |
(n+1)(n+2) |
1 |
n+1 |
1 |
n+2 |
1 |
c1c2 |
1 |
c2c3 |
1 |
cncn+1 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
n+1 |
1 |
n+2 |
1 |
2 |
1 |
n+2 |
36 |
n+2 |
1 |
x |
A.-5 | B.5 | C.-10 | D.10 |
3 | x2 |
1 |
x2 |
A.-28 | B.-70 | C.70 | D.28 |
1 |
x2 |
x |
1 |
x |
1 |
x |
A.4 | B.6 | C.7 | D.10 |
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