A048505 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 2 | | 1 |
| | | | | | | | | 7 | | 5 | | 1 |
| | | | | | | | 25 | | 18 | | 10 | | 1 |
| | | | | | | 81 | | 56 | | 35 | | 17 | | 1 |
| | | | | | 241 | | 160 | | 101 | | 58 | | 26 | | 1 |
| | | | | 673 | | 432 | | 269 | | 160 | | 87 | | 37 | | 1 |
| | | | 1793 | | 1120 | | 685 | | 408 | | 233 | | 122 | | 50 | | 1 |
| | | 4609 | | 2816 | | 1693 | | 1000 | | 577 | | 320 | | 163 | | 65 | | 1 |
| | 11521 | | 6912 | | 4093 | | 2392 | | 1377 | | 776 | | 421 |
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A048505 as a square array
1 | 2 | 7 | 25 | 81 | 241 | 673 | 1793 | 4609 | 11521
| 1 | 5 | 18 | 56 | 160 | 432 | 1120 | 2816 | 6912
| 1 | 10 | 35 | 101 | 269 | 685 | 1693 | 4093
| 1 | 17 | 58 | 160 | 408 | 1000 | 2392
| 1 | 26 | 87 | 233 | 577 | 1377
| 1 | 37 | 122 | 320 | 776
| 1 | 50 | 163 | 421
| 1 | 65
| 1
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A048505 as an upper right triangle
1 | 2 | 7 | 25 | 81 | 241 | 673 | 1793 | 4609 | 11521
| | 1 | 5 | 18 | 56 | 160 | 432 | 1120 | 2816 | 6912
| | | 1 | 10 | 35 | 101 | 269 | 685 | 1693 | 4093
| | | | 1 | 17 | 58 | 160 | 408 | 1000 | 2392
| | | | | 1 | 26 | 87 | 233 | 577 | 1377
| | | | | | 1 | 37 | 122 | 320 | 776
| | | | | | | 1 | 50 | 163 | 421
| | | | | | | | 1 | 65
| | | | | | | | | 1
| | | | | | | | |
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