A115154 formatted as a triangular array:
| | | | | | | 1 | | | | | | | |
| | | | | | 1 | | 4 | | | | | | |
| | | | | 1 | | 13 | | 25 | | | | | |
| | | | 1 | | 40 | | 115 | | 190 | | | | |
| | | 1 | | 121 | | 466 | | 1036 | | 1606 | | | |
| | 1 | | 364 | | 1762 | | 4870 | | 9688 | | 14506 | | |
| 1 | | 1093 | | 6379 | | 20989 | | 50053 | | 93571 | | 137089 | |
| 1 | | 3280 | | 22417 | | 85384 | | 235543 | | 516256 | | 927523 | | 1338790 |
A115154 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 4 | 13 | 40 | 121 | 364 | 1093 | 3280 | |
| 25 | 115 | 466 | 1762 | 6379 | 22417 | | |
| 190 | 1036 | 4870 | 20989 | 85384 | | | |
| 1606 | 9688 | 50053 | 235543 | | | | |
| 14506 | 93571 | 516256 | | | | | |
| 137089 | 927523 | | | | | | |
| 1338790 | | | | | | | |
A115154 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 4 | 13 | 40 | 121 | 364 | 1093 | 3280 |
| | 25 | 115 | 466 | 1762 | 6379 | 22417 |
| | | 190 | 1036 | 4870 | 20989 | 85384 |
| | | | 1606 | 9688 | 50053 | 235543 |
| | | | | 14506 | 93571 | 516256 |
| | | | | | 137089 | 927523 |
| | | | | | | 1338790 |
|
