A008281 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 0 | | 1 |
| | | | | | | | | 0 | | 1 | | 1 |
| | | | | | | | 0 | | 1 | | 2 | | 2 |
| | | | | | | 0 | | 2 | | 4 | | 5 | | 5 |
| | | | | | 0 | | 5 | | 10 | | 14 | | 16 | | 16 |
| | | | | 0 | | 16 | | 32 | | 46 | | 56 | | 61 | | 61 |
| | | | 0 | | 61 | | 122 | | 178 | | 224 | | 256 | | 272 | | 272 |
| | | 0 | | 272 | | 544 | | 800 | | 1024 | | 1202 | | 1324 | | 1385 | | 1385 |
| | 0 | | 1385 | | 2770 | | 4094 | | 5296 | | 6320 | | 7120 | | 7664 | | 7936 | | 7936 |
|
A008281 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 1 | 1 | 2 | 5 | 16 | 61 | 272 | 1385
| 1 | 2 | 4 | 10 | 32 | 122 | 544 | 2770
| 2 | 5 | 14 | 46 | 178 | 800 | 4094
| 5 | 16 | 56 | 224 | 1024 | 5296
| 16 | 61 | 256 | 1202 | 6320
| 61 | 272 | 1324 | 7120
| 272 | 1385 | 7664
| 1385 | 7936
| 7936
|
A008281 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 1 | 1 | 2 | 5 | 16 | 61 | 272 | 1385
| | | 1 | 2 | 4 | 10 | 32 | 122 | 544 | 2770
| | | | 2 | 5 | 14 | 46 | 178 | 800 | 4094
| | | | | 5 | 16 | 56 | 224 | 1024 | 5296
| | | | | | 16 | 61 | 256 | 1202 | 6320
| | | | | | | 61 | 272 | 1324 | 7120
| | | | | | | | 272 | 1385 | 7664
| | | | | | | | | 1385 | 7936
| | | | | | | | | | 7936
|
|