A008957 formatted as a triangular array:
| | | | | | | | 1 | | | | | | | | |
| | | | | | | 1 | | 1 | | | | | | | |
| | | | | | 1 | | 5 | | 1 | | | | | | |
| | | | | 1 | | 14 | | 21 | | 1 | | | | | |
| | | | 1 | | 30 | | 147 | | 85 | | 1 | | | | |
| | | 1 | | 55 | | 627 | | 1408 | | 341 | | 1 | | | |
| | 1 | | 91 | | 2002 | | 11440 | | 13013 | | 1365 | | 1 | | |
| 1 | | 140 | | 5278 | | 61490 | | 196053 | | 118482 | | 5461 | | 1 | |
| 1 | | 204 | | 12138 | | 251498 | | 1733303 | | 3255330 | | 1071799 | | 21845 | | 1 |
A008957 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 5 | 14 | 30 | 55 | 91 | 140 | 204 | |
| 1 | 21 | 147 | 627 | 2002 | 5278 | 12138 | | |
| 1 | 85 | 1408 | 11440 | 61490 | 251498 | | | |
| 1 | 341 | 13013 | 196053 | 1733303 | | | | |
| 1 | 1365 | 118482 | 3255330 | | | | | |
| 1 | 5461 | 1071799 | | | | | | |
| 1 | 21845 | | | | | | | |
| 1 | | | | | | | | |
A008957 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 5 | 14 | 30 | 55 | 91 | 140 | 204 |
| | 1 | 21 | 147 | 627 | 2002 | 5278 | 12138 |
| | | 1 | 85 | 1408 | 11440 | 61490 | 251498 |
| | | | 1 | 341 | 13013 | 196053 | 1733303 |
| | | | | 1 | 1365 | 118482 | 3255330 |
| | | | | | 1 | 5461 | 1071799 |
| | | | | | | 1 | 21845 |
| | | | | | | | 1 |
|
