A101321 as a triangular array
| | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | | 1 | | 4 | | 3 | | 1 |
| | | | | | | | | | 1 | | 7 | | 7 | | 4 | | 1 |
| | | | | | | | | 1 | | 11 | | 13 | | 10 | | 5 | | 1 |
| | | | | | | | 1 | | 16 | | 21 | | 19 | | 13 | | 6 | | 1 |
| | | | | | | 1 | | 22 | | 31 | | 31 | | 25 | | 16 | | 7 | | 1 |
| | | | | | 1 | | 29 | | 43 | | 46 | | 41 | | 31 | | 19 | | 8 | | 1 |
| | | | | 1 | | 37 | | 57 | | 64 | | 61 | | 51 | | 37 | | 22 | | 9 | | 1 |
| | | | 1 | | 46 | | 73 | | 85 | | 85 | | 76 | | 61 | | 43 | | 25 | | 10 | | 1 |
| | | 1 | | 56 | | 91 | | 109 | | 113 | | 106 | | 91 | | 71 | | 49 | | 28 | | 11 | | 1 |
| | 1 | | 67 |
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A101321 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 4 | 7 | 11 | 16 | 22 | 29 | 37 | 46 | 56 | 67
| 1 | 3 | 7 | 13 | 21 | 31 | 43 | 57 | 73 | 91
| 1 | 4 | 10 | 19 | 31 | 46 | 64 | 85 | 109
| 1 | 5 | 13 | 25 | 41 | 61 | 85 | 113
| 1 | 6 | 16 | 31 | 51 | 76 | 106
| 1 | 7 | 19 | 37 | 61 | 91
| 1 | 8 | 22 | 43 | 71
| 1 | 9 | 25 | 49
| 1 | 10 | 28
| 1 | 11
| 1
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A101321 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 7 | 11 | 16 | 22 | 29 | 37 | 46 | 56 | 67
| | | 1 | 3 | 7 | 13 | 21 | 31 | 43 | 57 | 73 | 91
| | | | 1 | 4 | 10 | 19 | 31 | 46 | 64 | 85 | 109
| | | | | 1 | 5 | 13 | 25 | 41 | 61 | 85 | 113
| | | | | | 1 | 6 | 16 | 31 | 51 | 76 | 106
| | | | | | | 1 | 7 | 19 | 37 | 61 | 91
| | | | | | | | 1 | 8 | 22 | 43 | 71
| | | | | | | | | 1 | 9 | 25 | 49
| | | | | | | | | | 1 | 10 | 28
| | | | | | | | | | | 1 | 11
| | | | | | | | | | | | 1
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