A101391 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 2 | | 1 |
| | | | | | | | | | | 2 | | 3 | | 1 |
| | | | | | | | | | 4 | | 6 | | 4 | | 1 |
| | | | | | | | | 2 | | 9 | | 10 | | 5 | | 1 |
| | | | | | | | 6 | | 15 | | 20 | | 15 | | 6 | | 1 |
| | | | | | | 4 | | 18 | | 34 | | 35 | | 21 | | 7 | | 1 |
| | | | | | 6 | | 27 | | 56 | | 70 | | 56 | | 28 | | 8 | | 1 |
| | | | | 4 | | 30 | | 80 | | 125 | | 126 | | 84 | | 36 | | 9 | | 1 |
| | | | 10 | | 45 | | 120 | | 210 | | 252 | | 210 | | 120 | | 45 | | 10 | | 1 |
| | | 4 | | 42 | | 154 | | 325 | | 461 | | 462 | | 330 | | 165 | | 55 | | 11 | | 1 |
| | 12 | | 66 | | 220 | | 495 | | 792 | | 924 | | 792 | | 495 | | 220 | | 66 | | 12 | | 1 |
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A101391 as a square array
1 | 2 | 2 | 4 | 2 | 6 | 4 | 6 | 4 | 10 | 4 | 12
| 1 | 3 | 6 | 9 | 15 | 18 | 27 | 30 | 45 | 42 | 66
| 1 | 4 | 10 | 20 | 34 | 56 | 80 | 120 | 154 | 220
| 1 | 5 | 15 | 35 | 70 | 125 | 210 | 325 | 495
| 1 | 6 | 21 | 56 | 126 | 252 | 461 | 792
| 1 | 7 | 28 | 84 | 210 | 462 | 924
| 1 | 8 | 36 | 120 | 330 | 792
| 1 | 9 | 45 | 165 | 495
| 1 | 10 | 55 | 220
| 1 | 11 | 66
| 1 | 12
| 1
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A101391 as an upper right triangle
1 | 2 | 2 | 4 | 2 | 6 | 4 | 6 | 4 | 10 | 4 | 12
| | 1 | 3 | 6 | 9 | 15 | 18 | 27 | 30 | 45 | 42 | 66
| | | 1 | 4 | 10 | 20 | 34 | 56 | 80 | 120 | 154 | 220
| | | | 1 | 5 | 15 | 35 | 70 | 125 | 210 | 325 | 495
| | | | | 1 | 6 | 21 | 56 | 126 | 252 | 461 | 792
| | | | | | 1 | 7 | 28 | 84 | 210 | 462 | 924
| | | | | | | 1 | 8 | 36 | 120 | 330 | 792
| | | | | | | | 1 | 9 | 45 | 165 | 495
| | | | | | | | | 1 | 10 | 55 | 220
| | | | | | | | | | 1 | 11 | 66
| | | | | | | | | | | 1 | 12
| | | | | | | | | | | | 1
|
|