A133138 as a triangular array
| | | | | | | | | | | 2 |
| | | | | | | | | | | 2 | | 2 |
| | | | | | | | | | 1 | | 3 | | 2 |
| | | | | | | | | 1 | | 3 | | 4 | | 2 |
| | | | | | | | 1 | | 4 | | 6 | | 5 | | 2 |
| | | | | | | 1 | | 5 | | 10 | | 10 | | 6 | | 2 |
| | | | | | 1 | | 6 | | 15 | | 20 | | 15 | | 7 | | 2 |
| | | | | 1 | | 7 | | 21 | | 35 | | 35 | | 21 | | 8 | | 2 |
| | | | 1 | | 8 | | 28 | | 56 | | 70 | | 56 | | 28 | | 9 | | 2 |
| | | 1 | | 9 | | 36 | | 84 | | 126 | | 126 | | 84 | | 36 | | 10 | | 2 |
| | 1 | | 10 | | 45 | | 120 | | 210 | | 252 | | 210 | | 120 | | 45 | | 11 | | 2 |
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A133138 as a square array
2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 2 | 3 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| 2 | 4 | 6 | 10 | 15 | 21 | 28 | 36 | 45
| 2 | 5 | 10 | 20 | 35 | 56 | 84 | 120
| 2 | 6 | 15 | 35 | 70 | 126 | 210
| 2 | 7 | 21 | 56 | 126 | 252
| 2 | 8 | 28 | 84 | 210
| 2 | 9 | 36 | 120
| 2 | 10 | 45
| 2 | 11
| 2
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A133138 as an upper right triangle
2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 2 | 3 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | | 2 | 4 | 6 | 10 | 15 | 21 | 28 | 36 | 45
| | | | 2 | 5 | 10 | 20 | 35 | 56 | 84 | 120
| | | | | 2 | 6 | 15 | 35 | 70 | 126 | 210
| | | | | | 2 | 7 | 21 | 56 | 126 | 252
| | | | | | | 2 | 8 | 28 | 84 | 210
| | | | | | | | 2 | 9 | 36 | 120
| | | | | | | | | 2 | 10 | 45
| | | | | | | | | | 2 | 11
| | | | | | | | | | | 2
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