A156041 as a triangular array
| | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 3 | | 1 |
| | | | | | | | | | 1 | | 3 | | 4 | | 4 | | 1 |
| | | | | | | | | 1 | | 3 | | 6 | | 7 | | 5 | | 1 |
| | | | | | | | 1 | | 4 | | 8 | | 11 | | 11 | | 6 | | 1 |
| | | | | | | 1 | | 4 | | 11 | | 17 | | 19 | | 16 | | 7 | | 1 |
| | | | | | 1 | | 5 | | 13 | | 26 | | 32 | | 31 | | 22 | | 8 | | 1 |
| | | | | 1 | | 5 | | 17 | | 35 | | 54 | | 56 | | 48 | | 29 | | 9 | | 1 |
| | | | 1 | | 6 | | 20 | | 48 | | 82 | | 102 | | 93 | | 71 | | 37 | | 10 | | 1 |
| | | 1 | | 6 | | 24 | | 63 | | 120 | | 172 | | 180 | | 148 | | 101 | | 46 | | 11 | | 1 |
| | 1 | | 7 | | 28 | | 81 | | 170 |
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A156041 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7
| 1 | 3 | 4 | 6 | 8 | 11 | 13 | 17 | 20 | 24 | 28
| 1 | 4 | 7 | 11 | 17 | 26 | 35 | 48 | 63 | 81
| 1 | 5 | 11 | 19 | 32 | 54 | 82 | 120 | 170
| 1 | 6 | 16 | 31 | 56 | 102 | 172
| 1 | 7 | 22 | 48 | 93 | 180
| 1 | 8 | 29 | 71 | 148
| 1 | 9 | 37 | 101
| 1 | 10 | 46
| 1 | 11
| 1
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A156041 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7
| | | 1 | 3 | 4 | 6 | 8 | 11 | 13 | 17 | 20 | 24 | 28
| | | | 1 | 4 | 7 | 11 | 17 | 26 | 35 | 48 | 63 | 81
| | | | | 1 | 5 | 11 | 19 | 32 | 54 | 82 | 120 | 170
| | | | | | 1 | 6 | 16 | 31 | 56 | 102 | 172
| | | | | | | 1 | 7 | 22 | 48 | 93 | 180
| | | | | | | | 1 | 8 | 29 | 71 | 148
| | | | | | | | | 1 | 9 | 37 | 101
| | | | | | | | | | 1 | 10 | 46
| | | | | | | | | | | 1 | 11
| | | | | | | | | | | | 1
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