A221890 as a triangular array
| | | | | | | | | | 0 |
| | | | | | | | | | 0 | | 0 |
| | | | | | | | | 0 | | 0 | | 0 |
| | | | | | | | 0 | | 8 | | 0 | | 0 |
| | | | | | | 0 | | 37 | | 0 | | 0 | | 0 |
| | | | | | 0 | | 169 | | 202 | | 90 | | 0 | | 0 |
| | | | | 0 | | 811 | | 2722 | | 4137 | | 204 | | 0 | | 0 |
| | | | 0 | | 3878 | | 31881 | | 154458 | | 56313 | | 1297 | | 0 | | 0 |
| | | 0 | | 18502 | | 416630 | | 5488703 | | 5408074 | | 760578 | | 4608 | | 0 | | 0 |
| | 0 | | 88302 | | 5496803 | | 201212852 | | 537483861 | | 216702488 | | 10743570 |
|
A221890 as a square array
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 8 | 37 | 169 | 811 | 3878 | 18502 | 88302
| 0 | 0 | 0 | 202 | 2722 | 31881 | 416630 | 5496803
| 0 | 0 | 90 | 4137 | 154458 | 5488703 | 201212852
| 0 | 0 | 204 | 56313 | 5408074 | 537483861
| 0 | 0 | 1297 | 760578 | 216702488
| 0 | 0 | 4608 | 10743570
| 0 | 0
| 0
|
A221890 as an upper right triangle
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 0 | 0 | 8 | 37 | 169 | 811 | 3878 | 18502 | 88302
| | | 0 | 0 | 0 | 202 | 2722 | 31881 | 416630 | 5496803
| | | | 0 | 0 | 90 | 4137 | 154458 | 5488703 | 201212852
| | | | | 0 | 0 | 204 | 56313 | 5408074 | 537483861
| | | | | | 0 | 0 | 1297 | 760578 | 216702488
| | | | | | | 0 | 0 | 4608 | 10743570
| | | | | | | | 0 | 0
| | | | | | | | | 0
| | | | | | | | |
|
|