A154986 formatted as a triangular array:
| | | | | | | | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | | | | | | | |
| | | | | | | 1 | | 4 | | 1 | | | | | | | |
| | | | | | 1 | | 11 | | 11 | | 1 | | | | | | |
| | | | | 1 | | 24 | | 70 | | 24 | | 1 | | | | | |
| | | | 1 | | 45 | | 314 | | 314 | | 45 | | 1 | | | | |
| | | 1 | | 76 | | 1079 | | 2728 | | 1079 | | 76 | | 1 | | | |
| | 1 | | 119 | | 3045 | | 16995 | | 16995 | | 3045 | | 119 | | 1 | | |
| 1 | | 176 | | 7420 | | 80464 | | 186758 | | 80464 | | 7420 | | 176 | | 1 | |
| 1 | | 249 | | 16164 | | 307124 | | 1490862 | | 1490862 | | 307124 | | 16164 | | 249 | | 1 |
A154986 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 4 | 11 | 24 | 45 | 76 | 119 | 176 | 249 | |
| 1 | 11 | 70 | 314 | 1079 | 3045 | 7420 | 16164 | | |
| 1 | 24 | 314 | 2728 | 16995 | 80464 | 307124 | | | |
| 1 | 45 | 1079 | 16995 | 186758 | 1490862 | | | | |
| 1 | 76 | 3045 | 80464 | 1490862 | | | | | |
| 1 | 119 | 7420 | 307124 | | | | | | |
| 1 | 176 | 16164 | | | | | | | |
| 1 | 249 | | | | | | | | |
| 1 | | | | | | | | | |
A154986 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 4 | 11 | 24 | 45 | 76 | 119 | 176 | 249 |
| | 1 | 11 | 70 | 314 | 1079 | 3045 | 7420 | 16164 |
| | | 1 | 24 | 314 | 2728 | 16995 | 80464 | 307124 |
| | | | 1 | 45 | 1079 | 16995 | 186758 | 1490862 |
| | | | | 1 | 76 | 3045 | 80464 | 1490862 |
| | | | | | 1 | 119 | 7420 | 307124 |
| | | | | | | 1 | 176 | 16164 |
| | | | | | | | 1 | 249 |
| | | | | | | | | 1 |
|
