A251428 as a triangular array
| | | | | | | | | | 2 |
| | | | | | | | | | 9 | | 12 |
| | | | | | | | | 16 | | 41 | | 12 |
| | | | | | | | 29 | | 116 | | 97 | | 40 |
| | | | | | | 42 | | 237 | | 380 | | 341 | | 56 |
| | | | | | 61 | | 432 | | 1113 | | 1888 | | 1003 | | 144 |
| | | | | 80 | | 725 | | 2532 | | 6589 | | 7458 | | 3129 | | 240 |
| | | | 105 | | 1128 | | 5097 | | 18952 | | 34893 | | 31980 | | 9439 | | 544 |
| | | 130 | | 1641 | | 9120 | | 44465 | | 122452 | | 183341 | | 127566 | | 28717 | | 992 |
| | 161 | | 2316 | | 15449 |
|
A251428 as a square array
2 | 9 | 16 | 29 | 42 | 61 | 80 | 105 | 130 | 161
| 12 | 41 | 116 | 237 | 432 | 725 | 1128 | 1641 | 2316
| 12 | 97 | 380 | 1113 | 2532 | 5097 | 9120 | 15449
| 40 | 341 | 1888 | 6589 | 18952 | 44465
| 56 | 1003 | 7458 | 34893 | 122452
| 144 | 3129 | 31980 | 183341
| 240 | 9439 | 127566
| 544 | 28717
| 992
|
A251428 as an upper right triangle
2 | 9 | 16 | 29 | 42 | 61 | 80 | 105 | 130 | 161
| | 12 | 41 | 116 | 237 | 432 | 725 | 1128 | 1641 | 2316
| | | 12 | 97 | 380 | 1113 | 2532 | 5097 | 9120 | 15449
| | | | 40 | 341 | 1888 | 6589 | 18952 | 44465
| | | | | 56 | 1003 | 7458 | 34893 | 122452
| | | | | | 144 | 3129 | 31980 | 183341
| | | | | | | 240 | 9439 | 127566
| | | | | | | | 544 | 28717
| | | | | | | | | 992
| | | | | | | | |
|
|