A251716 as a triangular array
| | | | | | | | | | | | 2 |
| | | | | | | | | | | | 3 | | 4 |
| | | | | | | | | | | 7 | | 5 | | 6 |
| | | | | | | | | | 8 | | 9 | | 7 | | 8 |
| | | | | | | | | 20 | | 13 | | 11 | | 10 | | 10 |
| | | | | | | | 21 | | 22 | | 15 | | 13 | | 12 | | 12 |
| | | | | | | 28 | | 23 | | 24 | | 17 | | 16 | | 17 | | 14 |
| | | | | | 41 | | 30 | | 25 | | 34 | | 27 | | 18 | | 19 | | 16 |
| | | | | 49 | | 43 | | 32 | | 36 | | 46 | | 38 | | 26 | | 21 | | 18 |
| | | | 59 | | 51 | | 45 | | 35 | | 38 | | 66 | | 40 | | 32 | | 24 | | 20 |
| | | 60 | | 61 | | 53 | | 47 | | 67 | | 54 | | 68 | | 42 | | 34 | | 26 | | 25 |
| | 77 |
|
A251716 as a square array
2 | 3 | 7 | 8 | 20 | 21 | 28 | 41 | 49 | 59 | 60 | 77
| 4 | 5 | 9 | 13 | 22 | 23 | 30 | 43 | 51 | 61
| 6 | 7 | 11 | 15 | 24 | 25 | 32 | 45 | 53
| 8 | 10 | 13 | 17 | 34 | 36 | 35 | 47
| 10 | 12 | 16 | 27 | 46 | 38 | 67
| 12 | 17 | 18 | 38 | 66 | 54
| 14 | 19 | 26 | 40 | 68
| 16 | 21 | 32 | 42
| 18 | 24 | 34
| 20 | 26
| 25
|
A251716 as an upper right triangle
2 | 3 | 7 | 8 | 20 | 21 | 28 | 41 | 49 | 59 | 60 | 77
| | 4 | 5 | 9 | 13 | 22 | 23 | 30 | 43 | 51 | 61
| | | 6 | 7 | 11 | 15 | 24 | 25 | 32 | 45 | 53
| | | | 8 | 10 | 13 | 17 | 34 | 36 | 35 | 47
| | | | | 10 | 12 | 16 | 27 | 46 | 38 | 67
| | | | | | 12 | 17 | 18 | 38 | 66 | 54
| | | | | | | 14 | 19 | 26 | 40 | 68
| | | | | | | | 16 | 21 | 32 | 42
| | | | | | | | | 18 | 24 | 34
| | | | | | | | | | 20 | 26
| | | | | | | | | | | 25
| | | | | | | | | | |
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