A158497 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 2 | | 2 |
| | | | | | | 1 | | 3 | | 6 | | 12 |
| | | | | | 1 | | 4 | | 12 | | 36 | | 108 |
| | | | | 1 | | 5 | | 20 | | 80 | | 320 | | 1280 |
| | | | 1 | | 6 | | 30 | | 150 | | 750 | | 3750 | | 18750 |
| | | 1 | | 7 | | 42 | | 252 | | 1512 | | 9072 | | 54432 | | 326592 |
| | 1 | | 8 | | 56 | | 392 | | 2744 | | 19208 | | 134456 | | 941192 | | 6588344 |
|
A158497 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
| 2 | 6 | 12 | 20 | 30 | 42 | 56
| 12 | 36 | 80 | 150 | 252 | 392
| 108 | 320 | 750 | 1512 | 2744
| 1280 | 3750 | 9072 | 19208
| 18750 | 54432 | 134456
| 326592 | 941192
| 6588344
|
A158497 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
| | | 2 | 6 | 12 | 20 | 30 | 42 | 56
| | | | 12 | 36 | 80 | 150 | 252 | 392
| | | | | 108 | 320 | 750 | 1512 | 2744
| | | | | | 1280 | 3750 | 9072 | 19208
| | | | | | | 18750 | 54432 | 134456
| | | | | | | | 326592 | 941192
| | | | | | | | | 6588344
|
|