A231997 as a triangular array
| | | | | | | | | 4 |
| | | | | | | | | 6 | | 9 |
| | | | | | | | 16 | | 32 | | 25 |
| | | | | | | 39 | | 121 | | 156 | | 64 |
| | | | | | 81 | | 406 | | 1024 | | 800 | | 169 |
| | | | | 168 | | 1225 | | 5778 | | 8464 | | 4000 | | 441 |
| | | | 361 | | 3916 | | 28900 | | 80511 | | 70225 | | 20228 | | 1156 |
| | | 780 | | 12769 | | 155496 | | 674041 | | 1129755 | | 582169 | | 101808 | | 3025 |
| | 1681 | | 41180 | | 863041 | | 6257919 | | 15594601 | | 15851094 |
|
A231997 as a square array
4 | 6 | 16 | 39 | 81 | 168 | 361 | 780 | 1681
| 9 | 32 | 121 | 406 | 1225 | 3916 | 12769 | 41180
| 25 | 156 | 1024 | 5778 | 28900 | 155496 | 863041
| 64 | 800 | 8464 | 80511 | 674041 | 6257919
| 169 | 4000 | 70225 | 1129755 | 15594601
| 441 | 20228 | 582169 | 15851094
| 1156 | 101808
| 3025
|
A231997 as an upper right triangle
4 | 6 | 16 | 39 | 81 | 168 | 361 | 780 | 1681
| | 9 | 32 | 121 | 406 | 1225 | 3916 | 12769 | 41180
| | | 25 | 156 | 1024 | 5778 | 28900 | 155496 | 863041
| | | | 64 | 800 | 8464 | 80511 | 674041 | 6257919
| | | | | 169 | 4000 | 70225 | 1129755 | 15594601
| | | | | | 441 | 20228 | 582169 | 15851094
| | | | | | | 1156 | 101808
| | | | | | | | 3025
| | | | | | | |
|
|