1 |
2 |
1 |
3 |
1 |
4 |
1 |
1997 |
1 |
1998 |
1 |
1999 |
1 |
2 |
1 |
4 |
1 |
6 |
1 |
1998 |
=(1+
1 |
2 |
1 |
3 |
1 |
1999 |
1 |
2 |
1 |
3 |
1 |
999 |
=
1 |
1000 |
1 |
1001 |
1 |
1999 |
分母=
1 |
2000 |
1 |
2002 |
1 |
2004 |
1 |
3996 |
1 |
3998 |
=2×(
1 |
1000 |
1 |
1001 |
1 |
1999 |
原式=
| ||||||
2×(
|
1 |
2 |
1?
| ||||||||||||
|
1 |
2 |
1 |
3 |
1 |
4 |
1 |
1997 |
1 |
1998 |
1 |
1999 |
1 |
2 |
1 |
4 |
1 |
6 |
1 |
1998 |
1 |
2 |
1 |
3 |
1 |
1999 |
1 |
2 |
1 |
3 |
1 |
999 |
1 |
1000 |
1 |
1001 |
1 |
1999 |
1 |
2000 |
1 |
2002 |
1 |
2004 |
1 |
3996 |
1 |
3998 |
1 |
1000 |
1 |
1001 |
1 |
1999 |
| ||||||
2×(
|
1 |
2 |