A181612 as a triangular array
| | | | | | | | 1 |
| | | | | | | | 1 | | 1 |
| | | | | | | 5 | | 6 | | 1 |
| | | | | | 61 | | 107 | | 47 | | 1 |
| | | | | 1385 | | 3116 | | 2142 | | 412 | | 1 |
| | | | 50521 | | 138933 | | 130250 | | 45530 | | 3693 | | 1 |
| | | 2702765 | | 8783986 | | 10430983 | | 5353260 | | 1036715 | | 33218 | | 1 |
| | 199360981 | | 747603679 | | 1074680289 | | 728130163 | | 226132303 |
|
A181612 as a square array
| 1 | 1 | 5 | 61 | 1385 | 50521 | 2702765 | 199360981
| | 1 | 6 | 107 | 3116 | 138933 | 8783986 | 747603679
| | 1 | 47 | 2142 | 130250 | 10430983 | 1074680289
| | 1 | 412 | 45530 | 5353260 | 728130163
| | 1 | 3693 | 1036715 | 226132303
| | 1 | 33218
| | 1
|
A181612 as an upper right triangle
| 1 | 1 | 5 | 61 | 1385 | 50521 | 2702765 | 199360981
| | 1 | 6 | 107 | 3116 | 138933 | 8783986 | 747603679
| | | 1 | 47 | 2142 | 130250 | 10430983 | 1074680289
| | | | 1 | 412 | 45530 | 5353260 | 728130163
| | | | | 1 | 3693 | 1036715 | 226132303
| | | | | | 1 | 33218
| | | | | | | 1
| | | | | | |
|
|
