A047921 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 2 |
| | | | | | | | | | 5 | | 1 | | 21 |
| | | | | | | | | 2 | | 1 | | 106 | | 11 |
| | | | | | | | 2 | | 1 | | 643 | | 62 | | 12 |
| | | | | | | 2 | | 1 | | 4547 | | 406 | | 71 | | 13 |
| | | | | | 2 | | 1 | | 36696 | | 3046 | | 481 | | 80 | | 14 |
| | | | | 2 | | 1 | | 332769 | | 25737 | | 3708 | | 559 | | 89 | | 15 |
| | | | 2 | | 1 | | 3349507 | | 242094 | | 32028 | | 4414 | | 640 | | 98 | | 16 |
| | | 2 | | 1 | | 37054436 | | 2510733 | | 306723 | | 38893 | | 5164 | | 724 | | 107 | | 17 |
| | 2 | | 1 |
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A047921 as a square array
1 | 1 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2
| 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 21 | 106 | 643 | 4547 | 36696 | 332769 | 3349507 | 37054436
| 11 | 62 | 406 | 3046 | 25737 | 242094 | 2510733
| 12 | 71 | 481 | 3708 | 32028 | 306723
| 13 | 80 | 559 | 4414 | 38893
| 14 | 89 | 640 | 5164
| 15 | 98 | 724
| 16 | 107
| 17
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A047921 as an upper right triangle
1 | 1 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2
| | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 21 | 106 | 643 | 4547 | 36696 | 332769 | 3349507 | 37054436
| | | | 11 | 62 | 406 | 3046 | 25737 | 242094 | 2510733
| | | | | 12 | 71 | 481 | 3708 | 32028 | 306723
| | | | | | 13 | 80 | 559 | 4414 | 38893
| | | | | | | 14 | 89 | 640 | 5164
| | | | | | | | 15 | 98 | 724
| | | | | | | | | 16 | 107
| | | | | | | | | | 17
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