A180091 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 3 |
| | | | | | | | 1 | | 3 | | 5 | | 9 |
| | | | | | | 1 | | 4 | | 8 | | 15 | | 27 |
| | | | | | 1 | | 5 | | 12 | | 24 | | 46 | | 83 |
| | | | | 1 | | 6 | | 17 | | 37 | | 75 | | 143 | | 259 |
| | | | 1 | | 7 | | 23 | | 55 | | 118 | | 237 | | 450 | | 817 |
| | | 1 | | 8 | | 30 | | 79 | | 180 | | 380 | | 755 | | 1429 | | 2599 |
| | 1 | | 9 | | 38 | | 110 | | 267 | | 592 | | 1229 | | 2421 | | 4570 | | 8323 |
|
A180091 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | 3 | 5 | 8 | 12 | 17 | 23 | 30 | 38
| | 9 | 15 | 24 | 37 | 55 | 79 | 110
| | 27 | 46 | 75 | 118 | 180 | 267
| | 83 | 143 | 237 | 380 | 592
| | 259 | 450 | 755 | 1229
| | 817 | 1429 | 2421
| | 2599 | 4570
| | 8323
|
A180091 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | | 3 | 5 | 8 | 12 | 17 | 23 | 30 | 38
| | | | 9 | 15 | 24 | 37 | 55 | 79 | 110
| | | | | 27 | 46 | 75 | 118 | 180 | 267
| | | | | | 83 | 143 | 237 | 380 | 592
| | | | | | | 259 | 450 | 755 | 1229
| | | | | | | | 817 | 1429 | 2421
| | | | | | | | | 2599 | 4570
| | | | | | | | | | 8323
|
|
