A154915 formatted as a triangular array:
| | | | | | | | 4 | | | | | | | | |
| | | | | | | 3 | | 3 | | | | | | | |
| | | | | | 5 | | 8 | | 5 | | | | | | |
| | | | | 9 | | 24 | | 24 | | 9 | | | | | |
| | | | 17 | | 70 | | 112 | | 70 | | 17 | | | | |
| | | 33 | | 198 | | 480 | | 480 | | 198 | | 33 | | | |
| | 65 | | 544 | | 1920 | | 2880 | | 1920 | | 544 | | 65 | | |
| 129 | | 1452 | | 7308 | | 15624 | | 15624 | | 7308 | | 1452 | | 129 | |
| 257 | | 3770 | | 26724 | | 80640 | | 108864 | | 80640 | | 26724 | | 3770 | | 257 |
A154915 formatted as a square array:
| 4 | 3 | 5 | 9 | 17 | 33 | 65 | 129 | 257 |
| 3 | 8 | 24 | 70 | 198 | 544 | 1452 | 3770 | |
| 5 | 24 | 112 | 480 | 1920 | 7308 | 26724 | | |
| 9 | 70 | 480 | 2880 | 15624 | 80640 | | | |
| 17 | 198 | 1920 | 15624 | 108864 | | | | |
| 33 | 544 | 7308 | 80640 | | | | | |
| 65 | 1452 | 26724 | | | | | | |
| 129 | 3770 | | | | | | | |
| 257 | | | | | | | | |
A154915 formatted as an upper right triangle:
| 4 | 3 | 5 | 9 | 17 | 33 | 65 | 129 | 257 |
| 3 | 8 | 24 | 70 | 198 | 544 | 1452 | 3770 |
| | 5 | 24 | 112 | 480 | 1920 | 7308 | 26724 |
| | | 9 | 70 | 480 | 2880 | 15624 | 80640 |
| | | | 17 | 198 | 1920 | 15624 | 108864 |
| | | | | 33 | 544 | 7308 | 80640 |
| | | | | | 65 | 1452 | 26724 |
| | | | | | | 129 | 3770 |
| | | | | | | | 257 |
|