A174109 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 10 | | 1 |
| | | | | | | 1 | | 55 | | 55 | | 1 |
| | | | | | 1 | | 220 | | 1210 | | 220 | | 1 |
| | | | | 1 | | 715 | | 15730 | | 15730 | | 715 | | 1 |
| | | | 1 | | 2002 | | 143143 | | 572572 | | 143143 | | 2002 | | 1 |
| | | 1 | | 5005 | | 1002001 | | 13026013 | | 13026013 | | 1002001 | | 5005 | | 1 |
| | 1 | | 11440 | | 5725720 | | 208416208 | | 677352676 | | 208416208 | | 5725720 | | 11440 | | 1 |
|
A174109 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 10 | 55 | 220 | 715 | 2002 | 5005 | 11440
| | 1 | 55 | 1210 | 15730 | 143143 | 1002001 | 5725720
| | 1 | 220 | 15730 | 572572 | 13026013 | 208416208
| | 1 | 715 | 143143 | 13026013 | 677352676
| | 1 | 2002 | 1002001 | 208416208
| | 1 | 5005 | 5725720
| | 1 | 11440
| | 1
|
A174109 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 10 | 55 | 220 | 715 | 2002 | 5005 | 11440
| | | 1 | 55 | 1210 | 15730 | 143143 | 1002001 | 5725720
| | | | 1 | 220 | 15730 | 572572 | 13026013 | 208416208
| | | | | 1 | 715 | 143143 | 13026013 | 677352676
| | | | | | 1 | 2002 | 1002001 | 208416208
| | | | | | | 1 | 5005 | 5725720
| | | | | | | | 1 | 11440
| | | | | | | | | 1
|
|
