A260687 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 2 | | 2 |
| | | | | | | | 6 | | 15 | | 9 |
| | | | | | | 24 | | 104 | | 144 | | 64 |
| | | | | | 120 | | 770 | | 1775 | | 1750 | | 625 |
| | | | | 720 | | 6264 | | 20880 | | 33480 | | 25920 | | 7776 |
| | | | 5040 | | 56196 | | 250096 | | 571095 | | 708295 | | 453789 | | 117649 |
| | | 40320 | | 554112 | | 3127040 | | 9433088 | | 16486400 | | 16744448 | | 9175040 | | 2097152 |
| | 362880 | | 5973264 | | 41229324 | | 156498804 |
|
A260687 as a square array
1 | 2 | 6 | 24 | 120 | 720 | 5040 | 40320 | 362880
| 2 | 15 | 104 | 770 | 6264 | 56196 | 554112 | 5973264
| 9 | 144 | 1775 | 20880 | 250096 | 3127040 | 41229324
| 64 | 1750 | 33480 | 571095 | 9433088 | 156498804
| 625 | 25920 | 708295 | 16486400
| 7776 | 453789 | 16744448
| 117649 | 9175040
| 2097152
|
A260687 as an upper right triangle
1 | 2 | 6 | 24 | 120 | 720 | 5040 | 40320 | 362880
| | 2 | 15 | 104 | 770 | 6264 | 56196 | 554112 | 5973264
| | | 9 | 144 | 1775 | 20880 | 250096 | 3127040 | 41229324
| | | | 64 | 1750 | 33480 | 571095 | 9433088 | 156498804
| | | | | 625 | 25920 | 708295 | 16486400
| | | | | | 7776 | 453789 | 16744448
| | | | | | | 117649 | 9175040
| | | | | | | | 2097152
| | | | | | | |
|
|