A180839 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 1 | | 1 |
| | | | | | | | 1 | | 1 | | 9 | | 1 |
| | | | | | | 1 | | 1 | | 77 | | 72 | | 1 |
| | | | | | 1 | | 0 | | 472 | | 5385 | | 678 | | 1 |
| | | | | 1 | | 0 | | 2164 | | 300888 | | 545426 | | 7719 | | 1 |
| | | | 1 | | 0 | | 7919 | | 13455048 | | 333191079 | | 79230924 | | 102963 | | 1 |
| | | 1 | | 0 | | 23808 | | 506119693 | | 167550354642 | | 637698093267 | | 15755497776 | | 1573764 | | 1 |
| | 1 | | 0 | | 59823 |
|
A180839 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0
| | 1 | 9 | 77 | 472 | 2164 | 7919 | 23808 | 59823
| | 1 | 72 | 5385 | 300888 | 13455048 | 506119693
| | 1 | 678 | 545426 | 333191079 | 167550354642
| | 1 | 7719 | 79230924 | 637698093267
| | 1 | 102963 | 15755497776
| | 1 | 1573764
| | 1
|
A180839 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0
| | | 1 | 9 | 77 | 472 | 2164 | 7919 | 23808 | 59823
| | | | 1 | 72 | 5385 | 300888 | 13455048 | 506119693
| | | | | 1 | 678 | 545426 | 333191079 | 167550354642
| | | | | | 1 | 7719 | 79230924 | 637698093267
| | | | | | | 1 | 102963 | 15755497776
| | | | | | | | 1 | 1573764
| | | | | | | | | 1
| | | | | | | | |
|
|
