A008307 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | 1 | | 4 | | 1 | | 1 |
| | | | | | | | | 1 | | 10 | | 3 | | 2 | | 1 |
| | | | | | | | 1 | | 26 | | 9 | | 4 | | 1 | | 1 |
| | | | | | | 1 | | 76 | | 21 | | 16 | | 1 | | 2 | | 1 |
| | | | | | 1 | | 232 | | 81 | | 56 | | 1 | | 6 | | 1 | | 1 |
| | | | | 1 | | 764 | | 351 | | 256 | | 25 | | 18 | | 1 | | 2 | | 1 |
| | | | 1 | | 2620 | | 1233 | | 1072 | | 145 | | 66 | | 1 | | 4 | | 1 | | 1 |
| | | 1 | | 9496 | | 5769 | | 6224 | | 505 | | 396 | | 1 | | 16 | | 3 | | 2 | | 1 |
| | 1 | | 35696 | | 31041 | | 33616 | | 1345 | | 2052 | | 1 | | 56 | | 9 | | 4 | | 1 | | 1 |
|
A008307 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 10 | 26 | 76 | 232 | 764 | 2620 | 9496 | 35696
| | 1 | 1 | 3 | 9 | 21 | 81 | 351 | 1233 | 5769 | 31041
| | 1 | 2 | 4 | 16 | 56 | 256 | 1072 | 6224 | 33616
| | 1 | 1 | 1 | 1 | 25 | 145 | 505 | 1345
| | 1 | 2 | 6 | 18 | 66 | 396 | 2052
| | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 16 | 56
| | 1 | 1 | 3 | 9
| | 1 | 2 | 4
| | 1 | 1
| | 1
|
A008307 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 10 | 26 | 76 | 232 | 764 | 2620 | 9496 | 35696
| | | 1 | 1 | 3 | 9 | 21 | 81 | 351 | 1233 | 5769 | 31041
| | | | 1 | 2 | 4 | 16 | 56 | 256 | 1072 | 6224 | 33616
| | | | | 1 | 1 | 1 | 1 | 25 | 145 | 505 | 1345
| | | | | | 1 | 2 | 6 | 18 | 66 | 396 | 2052
| | | | | | | 1 | 1 | 1 | 1 | 1 | 1
| | | | | | | | 1 | 2 | 4 | 16 | 56
| | | | | | | | | 1 | 1 | 3 | 9
| | | | | | | | | | 1 | 2 | 4
| | | | | | | | | | | 1 | 1
| | | | | | | | | | | | 1
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