A166345 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | 1 | | 7 | | 7 | | 1 |
| | | | | | | 1 | | 18 | | 42 | | 18 | | 1 |
| | | | | | 1 | | 41 | | 198 | | 198 | | 41 | | 1 |
| | | | | 1 | | 88 | | 799 | | 1584 | | 799 | | 88 | | 1 |
| | | | 1 | | 183 | | 2925 | | 10331 | | 10331 | | 2925 | | 183 | | 1 |
| | | 1 | | 374 | | 10056 | | 58874 | | 103310 | | 58874 | | 10056 | | 374 | | 1 |
| | 1 | | 757 | | 33160 | | 305888 | | 869794 | | 869794 | | 305888 | | 33160 | | 757 | | 1 |
|
A166345 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 7 | 18 | 41 | 88 | 183 | 374 | 757
| | 1 | 7 | 42 | 198 | 799 | 2925 | 10056 | 33160
| | 1 | 18 | 198 | 1584 | 10331 | 58874 | 305888
| | 1 | 41 | 799 | 10331 | 103310 | 869794
| | 1 | 88 | 2925 | 58874 | 869794
| | 1 | 183 | 10056 | 305888
| | 1 | 374 | 33160
| | 1 | 757
| | 1
|
A166345 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 7 | 18 | 41 | 88 | 183 | 374 | 757
| | | 1 | 7 | 42 | 198 | 799 | 2925 | 10056 | 33160
| | | | 1 | 18 | 198 | 1584 | 10331 | 58874 | 305888
| | | | | 1 | 41 | 799 | 10331 | 103310 | 869794
| | | | | | 1 | 88 | 2925 | 58874 | 869794
| | | | | | | 1 | 183 | 10056 | 305888
| | | | | | | | 1 | 374 | 33160
| | | | | | | | | 1 | 757
| | | | | | | | | | 1
|
|
