1 |
2 |
1 |
3 |
1 |
4 |
1 |
2n-1 |
1 |
2n |
1 |
n+1 |
1 |
n+2 |
1 |
n+3 |
1 |
2n |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
4 |
7 |
12 |
1 |
1+1 |
1 |
2 |
1 |
2+1 |
1 |
2+2 |
7 |
12 |
1 |
2 |
1 |
3 |
1 |
4 |
1 |
2n-1 |
1 |
2n |
1 |
n+1 |
1 |
n+2 |
1 |
n+3 |
1 |
2n |
1 |
2 |
1 |
3 |
1 |
4 |
1 |
2k-1 |
1 |
2k |
1 |
k+1 |
1 |
k+2 |
1 |
k+3 |
1 |
2k |
1 |
2k+1 |
1 |
2(k+1) |
1 |
2k+1 |
1 |
2(k+1) |
1 |
k+1 |
1 |
k+2 |
1 |
k+3 |
1 |
2k |
1 |
2k+1 |
1 |
2(k+1) |
1 |
k+2 |
1 |
k+3 |
1 |
2k+1 |
1 |
k+1 |
1 |
2(k+1) |
1 |
(k+1)+1 |
1 |
(k+1)+2 |
1 |
2k+1 |
1 |
2(k+1) |
1 |
f(n) |
1 |
3 |
11 |
12 |
1 |
an2 |
1 |
n(n+1) |
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