A056860 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 2 |
| | | | | | | | 1 | | 3 | | 6 | | 5 |
| | | | | | | 1 | | 4 | | 12 | | 20 | | 15 |
| | | | | | 1 | | 5 | | 20 | | 50 | | 75 | | 52 |
| | | | | 1 | | 6 | | 30 | | 100 | | 225 | | 312 | | 203 |
| | | | 1 | | 7 | | 42 | | 175 | | 525 | | 1092 | | 1421 | | 877 |
| | | 1 | | 8 | | 56 | | 280 | | 1050 | | 2912 | | 5684 | | 7016 | | 4140 |
| | 1 | | 9 | | 72 | | 420 | | 1890 | | 6552 | | 17052 | | 31572 | | 37260 | | 21147 |
|
A056860 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| 2 | 6 | 12 | 20 | 30 | 42 | 56 | 72
| 5 | 20 | 50 | 100 | 175 | 280 | 420
| 15 | 75 | 225 | 525 | 1050 | 1890
| 52 | 312 | 1092 | 2912 | 6552
| 203 | 1421 | 5684 | 17052
| 877 | 7016 | 31572
| 4140 | 37260
| 21147
|
A056860 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | | 2 | 6 | 12 | 20 | 30 | 42 | 56 | 72
| | | | 5 | 20 | 50 | 100 | 175 | 280 | 420
| | | | | 15 | 75 | 225 | 525 | 1050 | 1890
| | | | | | 52 | 312 | 1092 | 2912 | 6552
| | | | | | | 203 | 1421 | 5684 | 17052
| | | | | | | | 877 | 7016 | 31572
| | | | | | | | | 4140 | 37260
| | | | | | | | | | 21147
|
|