| 1 |
| 1+2 |
| 1 |
| 1+2+3 |
| 1 |
| 1+2+3+4 |
| 1 |
| 1+2+3+…2005 |
| 1 |
| 1+2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 1+2+3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 1+2+3+4 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 1+2+…+k |
| 1 |
| k |
| 1 |
| k+1 |
| 1 |
| 1+2 |
| 1 |
| 1+2+3 |
| 1 |
| 1+2+3+4 |
| 1 |
| 1+2+3+…2005 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 2004 |
| 1 |
| 2005 |
| 1 |
| 2005 |
| 1 |
| 2006 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 2004 |
| 1 |
| 2005 |
| 1 |
| 2005 |
| 1 |
| 2006 |
| 1 |
| 2 |
| 1 |
| 2006 |
| 1 |
| 1003 |
| 1002 |
| 1003 |
| 1999×1999-1999 |
| 1998×1998+1998 |
| 2000×2000-2000 |
| 1999×1999+1999 |
| 2001×2001-2001 |
| 2000×2000+2000 |
| 1 |
| 3 |
| 1 |
| 8 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2 |