A055277 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 0 |
| | | | | | | | | | | 1 | | 1 | | 0 |
| | | | | | | | | | 1 | | 2 | | 1 | | 0 |
| | | | | | | | | 1 | | 4 | | 3 | | 1 | | 0 |
| | | | | | | | 1 | | 6 | | 8 | | 4 | | 1 | | 0 |
| | | | | | | 1 | | 9 | | 18 | | 14 | | 5 | | 1 | | 0 |
| | | | | | 1 | | 12 | | 35 | | 39 | | 21 | | 6 | | 1 | | 0 |
| | | | | 1 | | 16 | | 62 | | 97 | | 72 | | 30 | | 7 | | 1 | | 0 |
| | | | 1 | | 20 | | 103 | | 212 | | 214 | | 120 | | 40 | | 8 | | 1 | | 0 |
| | | 1 | | 25 | | 161 | | 429 | | 563 | | 416 | | 185 | | 52 | | 9 | | 1 | | 0 |
| | 1 | | 30 | | 241 | | 804 | | 1344 | | 1268 | | 732 | | 270 | | 65 | | 10 | | 1 | | 0 |
|
A055277 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 0 | 1 | 2 | 4 | 6 | 9 | 12 | 16 | 20 | 25 | 30
| | 0 | 1 | 3 | 8 | 18 | 35 | 62 | 103 | 161 | 241
| | 0 | 1 | 4 | 14 | 39 | 97 | 212 | 429 | 804
| | 0 | 1 | 5 | 21 | 72 | 214 | 563 | 1344
| | 0 | 1 | 6 | 30 | 120 | 416 | 1268
| | 0 | 1 | 7 | 40 | 185 | 732
| | 0 | 1 | 8 | 52 | 270
| | 0 | 1 | 9 | 65
| | 0 | 1 | 10
| | 0 | 1
| | 0
|
A055277 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 0 | 1 | 2 | 4 | 6 | 9 | 12 | 16 | 20 | 25 | 30
| | | 0 | 1 | 3 | 8 | 18 | 35 | 62 | 103 | 161 | 241
| | | | 0 | 1 | 4 | 14 | 39 | 97 | 212 | 429 | 804
| | | | | 0 | 1 | 5 | 21 | 72 | 214 | 563 | 1344
| | | | | | 0 | 1 | 6 | 30 | 120 | 416 | 1268
| | | | | | | 0 | 1 | 7 | 40 | 185 | 732
| | | | | | | | 0 | 1 | 8 | 52 | 270
| | | | | | | | | 0 | 1 | 9 | 65
| | | | | | | | | | 0 | 1 | 10
| | | | | | | | | | | 0 | 1
| | | | | | | | | | | | 0
|
|
