A081578 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 5 | | 1 |
| | | | | | | | | 1 | | 9 | | 9 | | 1 |
| | | | | | | | 1 | | 13 | | 33 | | 13 | | 1 |
| | | | | | | 1 | | 17 | | 73 | | 73 | | 17 | | 1 |
| | | | | | 1 | | 21 | | 129 | | 245 | | 129 | | 21 | | 1 |
| | | | | 1 | | 25 | | 201 | | 593 | | 593 | | 201 | | 25 | | 1 |
| | | | 1 | | 29 | | 289 | | 1181 | | 1921 | | 1181 | | 289 | | 29 | | 1 |
| | | 1 | | 33 | | 393 | | 2073 | | 4881 | | 4881 | | 2073 | | 393 | | 33 | | 1 |
| | 1 | | 37 | | 513 | | 3333 | | 10497 | | 15525 | | 10497 | | 3333 | | 513 | | 37 | | 1 |
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A081578 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 5 | 9 | 13 | 17 | 21 | 25 | 29 | 33 | 37
| 1 | 9 | 33 | 73 | 129 | 201 | 289 | 393 | 513
| 1 | 13 | 73 | 245 | 593 | 1181 | 2073 | 3333
| 1 | 17 | 129 | 593 | 1921 | 4881 | 10497
| 1 | 21 | 201 | 1181 | 4881 | 15525
| 1 | 25 | 289 | 2073 | 10497
| 1 | 29 | 393 | 3333
| 1 | 33 | 513
| 1 | 37
| 1
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A081578 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 9 | 13 | 17 | 21 | 25 | 29 | 33 | 37
| | | 1 | 9 | 33 | 73 | 129 | 201 | 289 | 393 | 513
| | | | 1 | 13 | 73 | 245 | 593 | 1181 | 2073 | 3333
| | | | | 1 | 17 | 129 | 593 | 1921 | 4881 | 10497
| | | | | | 1 | 21 | 201 | 1181 | 4881 | 15525
| | | | | | | 1 | 25 | 289 | 2073 | 10497
| | | | | | | | 1 | 29 | 393 | 3333
| | | | | | | | | 1 | 33 | 513
| | | | | | | | | | 1 | 37
| | | | | | | | | | | 1
|
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