5 |
6x |
1 |
x+1 |
1 |
x |
5 |
3x |
1 |
x+1 |
1 |
x |
∴
5 |
3x |
2x+1 |
x(x+1) |
∴这个等差数列的前3项分别为:
1 |
3 |
5 |
12 |
1 |
2 |
1 |
12 |
∴通项公式an=
1 |
3 |
1 |
12 |
n |
12 |
1 |
4 |
∴a101=
101 |
12 |
1 |
4 |
26 |
3 |
故答案为:
26 |
3 |
1 |
x+1 |
5 |
6x |
1 |
x |
5 |
6x |
1 |
x+1 |
1 |
x |
5 |
3x |
1 |
x+1 |
1 |
x |
5 |
3x |
2x+1 |
x(x+1) |
1 |
3 |
5 |
12 |
1 |
2 |
1 |
12 |
1 |
3 |
1 |
12 |
n |
12 |
1 |
4 |
101 |
12 |
1 |
4 |
26 |
3 |
26 |
3 |