A209557 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 2 | | 3 | | 1 |
| | | | | | | | | 2 | | 7 | | 7 | | 1 |
| | | | | | | | 3 | | 9 | | 18 | | 15 | | 1 |
| | | | | | | 3 | | 16 | | 30 | | 41 | | 31 | | 1 |
| | | | | | 4 | | 18 | | 60 | | 87 | | 88 | | 63 | | 1 |
| | | | | 4 | | 28 | | 78 | | 189 | | 232 | | 183 | | 127 | | 1 |
| | | | 5 | | 30 | | 136 | | 285 | | 535 | | 585 | | 374 | | 255 | | 1 |
| | | 5 | | 43 | | 160 | | 541 | | 931 | | 1410 | | 1418 | | 757 | | 511 | | 1 |
| | 6 | | 45 | | 255 | | 705 | | 1886 | | 2808 | | 3534 | | 3339 | | 1524 |
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A209557 as a square array
| 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6
| | 1 | 3 | 7 | 9 | 16 | 18 | 28 | 30 | 43 | 45
| | 1 | 7 | 18 | 30 | 60 | 78 | 136 | 160 | 255
| | 1 | 15 | 41 | 87 | 189 | 285 | 541 | 705
| | 1 | 31 | 88 | 232 | 535 | 931 | 1886
| | 1 | 63 | 183 | 585 | 1410 | 2808
| | 1 | 127 | 374 | 1418 | 3534
| | 1 | 255 | 757 | 3339
| | 1 | 511 | 1524
| | 1
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A209557 as an upper right triangle
| 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6
| | 1 | 3 | 7 | 9 | 16 | 18 | 28 | 30 | 43 | 45
| | | 1 | 7 | 18 | 30 | 60 | 78 | 136 | 160 | 255
| | | | 1 | 15 | 41 | 87 | 189 | 285 | 541 | 705
| | | | | 1 | 31 | 88 | 232 | 535 | 931 | 1886
| | | | | | 1 | 63 | 183 | 585 | 1410 | 2808
| | | | | | | 1 | 127 | 374 | 1418 | 3534
| | | | | | | | 1 | 255 | 757 | 3339
| | | | | | | | | 1 | 511 | 1524
| | | | | | | | | | 1
| | | | | | | | | |
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