A077228 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 3 | | 1 |
| | | | | | | | | | 1 | | 4 | | 4 | | 1 |
| | | | | | | | | 1 | | 4 | | 10 | | 5 | | 1 |
| | | | | | | | 1 | | 4 | | 17 | | 15 | | 6 | | 1 |
| | | | | | | 1 | | 4 | | 23 | | 35 | | 21 | | 7 | | 1 |
| | | | | | 1 | | 4 | | 26 | | 66 | | 56 | | 28 | | 8 | | 1 |
| | | | | 1 | | 4 | | 27 | | 106 | | 126 | | 84 | | 36 | | 9 | | 1 |
| | | | 1 | | 4 | | 27 | | 150 | | 247 | | 210 | | 120 | | 45 | | 10 | | 1 |
| | | 1 | | 4 | | 27 | | 190 | | 432 | | 462 | | 330 | | 165 | | 55 | | 11 | | 1 |
| | 1 | | 4 | | 27 | | 221 | | 687 | | 918 | | 792 | | 495 | | 220 | | 66 |
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A077228 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4
| | 1 | 4 | 10 | 17 | 23 | 26 | 27 | 27 | 27 | 27
| | 1 | 5 | 15 | 35 | 66 | 106 | 150 | 190 | 221
| | 1 | 6 | 21 | 56 | 126 | 247 | 432 | 687
| | 1 | 7 | 28 | 84 | 210 | 462 | 918
| | 1 | 8 | 36 | 120 | 330 | 792
| | 1 | 9 | 45 | 165 | 495
| | 1 | 10 | 55 | 220
| | 1 | 11 | 66
| | 1
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A077228 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4
| | | 1 | 4 | 10 | 17 | 23 | 26 | 27 | 27 | 27 | 27
| | | | 1 | 5 | 15 | 35 | 66 | 106 | 150 | 190 | 221
| | | | | 1 | 6 | 21 | 56 | 126 | 247 | 432 | 687
| | | | | | 1 | 7 | 28 | 84 | 210 | 462 | 918
| | | | | | | 1 | 8 | 36 | 120 | 330 | 792
| | | | | | | | 1 | 9 | 45 | 165 | 495
| | | | | | | | | 1 | 10 | 55 | 220
| | | | | | | | | | 1 | 11 | 66
| | | | | | | | | | | 1
| | | | | | | | | | |
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