A117380 formatted as a triangular array:
| | | | | | | | 1 | | | | | | | | |
| | | | | | | 4 | | 1 | | | | | | | |
| | | | | | 20 | | 5 | | 1 | | | | | | |
| | | | | 104 | | 26 | | 6 | | 1 | | | | | |
| | | | 548 | | 137 | | 33 | | 7 | | 1 | | | | |
| | | 2904 | | 726 | | 178 | | 41 | | 8 | | 1 | | | |
| | 15432 | | 3858 | | 954 | | 228 | | 50 | | 9 | | 1 | | |
| 82128 | | 20532 | | 5100 | | 1242 | | 288 | | 60 | | 10 | | 1 | |
| 437444 | | 109361 | | 27233 | | 6701 | | 1601 | | 359 | | 71 | | 11 | | 1 |
A117380 formatted as a square array:
| 1 | 4 | 20 | 104 | 548 | 2904 | 15432 | 82128 | 437444 |
| 1 | 5 | 26 | 137 | 726 | 3858 | 20532 | 109361 | |
| 1 | 6 | 33 | 178 | 954 | 5100 | 27233 | | |
| 1 | 7 | 41 | 228 | 1242 | 6701 | | | |
| 1 | 8 | 50 | 288 | 1601 | | | | |
| 1 | 9 | 60 | 359 | | | | | |
| 1 | 10 | 71 | | | | | | |
| 1 | 11 | | | | | | | |
| 1 | | | | | | | | |
A117380 formatted as an upper right triangle:
| 1 | 4 | 20 | 104 | 548 | 2904 | 15432 | 82128 | 437444 |
| 1 | 5 | 26 | 137 | 726 | 3858 | 20532 | 109361 |
| | 1 | 6 | 33 | 178 | 954 | 5100 | 27233 |
| | | 1 | 7 | 41 | 228 | 1242 | 6701 |
| | | | 1 | 8 | 50 | 288 | 1601 |
| | | | | 1 | 9 | 60 | 359 |
| | | | | | 1 | 10 | 71 |
| | | | | | | 1 | 11 |
| | | | | | | | 1 |
|
