A200181 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 3 |
| | | | | | | | | | 1 | | 3 | | 3 | | 3 |
| | | | | | | | | 1 | | 4 | | 5 | | 6 | | 2 |
| | | | | | | | 1 | | 5 | | 5 | | 11 | | 12 | | 6 |
| | | | | | | 1 | | 6 | | 7 | | 14 | | 15 | | 15 | | 10 |
| | | | | | 1 | | 7 | | 7 | | 19 | | 24 | | 29 | | 29 | | 7 |
| | | | | 1 | | 8 | | 9 | | 26 | | 31 | | 48 | | 78 | | 72 | | 12 |
| | | | 1 | | 9 | | 9 | | 31 | | 48 | | 72 | | 100 | | 160 | | 133 | | 28 |
| | | 1 | | 10 | | 11 | | 38 | | 53 | | 103 | | 186 | | 280 | | 283 | | 214 | | 29 |
| | 1 | | 11 | | 11 | | 47 | | 74 | | 141 | | 246 | | 460 | | 608 | | 574 | | 394 |
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A200181 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11
| 3 | 3 | 5 | 5 | 7 | 7 | 9 | 9 | 11 | 11
| 3 | 6 | 11 | 14 | 19 | 26 | 31 | 38 | 47
| 2 | 12 | 15 | 24 | 31 | 48 | 53 | 74
| 6 | 15 | 29 | 48 | 72 | 103 | 141
| 10 | 29 | 78 | 100 | 186 | 246
| 7 | 72 | 160 | 280 | 460
| 12 | 133 | 283 | 608
| 28 | 214 | 574
| 29 | 394
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A200181 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11
| | | 3 | 3 | 5 | 5 | 7 | 7 | 9 | 9 | 11 | 11
| | | | 3 | 6 | 11 | 14 | 19 | 26 | 31 | 38 | 47
| | | | | 2 | 12 | 15 | 24 | 31 | 48 | 53 | 74
| | | | | | 6 | 15 | 29 | 48 | 72 | 103 | 141
| | | | | | | 10 | 29 | 78 | 100 | 186 | 246
| | | | | | | | 7 | 72 | 160 | 280 | 460
| | | | | | | | | 12 | 133 | 283 | 608
| | | | | | | | | | 28 | 214 | 574
| | | | | | | | | | | 29 | 394
| | | | | | | | | | |
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