A101515 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | 1 | | 3 | | 3 | | 1 |
| | | | | | | | | 1 | | 4 | | 7 | | 4 | | 1 |
| | | | | | | | 1 | | 5 | | 13 | | 13 | | 5 | | 1 |
| | | | | | | 1 | | 6 | | 21 | | 35 | | 21 | | 6 | | 1 |
| | | | | | 1 | | 7 | | 31 | | 77 | | 77 | | 31 | | 7 | | 1 |
| | | | | 1 | | 8 | | 43 | | 146 | | 236 | | 146 | | 43 | | 8 | | 1 |
| | | | 1 | | 9 | | 57 | | 249 | | 596 | | 596 | | 249 | | 57 | | 9 | | 1 |
| | | 1 | | 10 | | 73 | | 393 | | 1290 | | 2037 | | 1290 | | 393 | | 73 | | 10 | | 1 |
| | 1 | | 11 | | 91 | | 585 | | 2486 | | 5772 | | 5772 | | 2486 | | 585 |
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A101515 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11
| | 1 | 3 | 7 | 13 | 21 | 31 | 43 | 57 | 73 | 91
| | 1 | 4 | 13 | 35 | 77 | 146 | 249 | 393 | 585
| | 1 | 5 | 21 | 77 | 236 | 596 | 1290 | 2486
| | 1 | 6 | 31 | 146 | 596 | 2037 | 5772
| | 1 | 7 | 43 | 249 | 1290 | 5772
| | 1 | 8 | 57 | 393 | 2486
| | 1 | 9 | 73 | 585
| | 1 | 10
| | 1
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A101515 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11
| | | 1 | 3 | 7 | 13 | 21 | 31 | 43 | 57 | 73 | 91
| | | | 1 | 4 | 13 | 35 | 77 | 146 | 249 | 393 | 585
| | | | | 1 | 5 | 21 | 77 | 236 | 596 | 1290 | 2486
| | | | | | 1 | 6 | 31 | 146 | 596 | 2037 | 5772
| | | | | | | 1 | 7 | 43 | 249 | 1290 | 5772
| | | | | | | | 1 | 8 | 57 | 393 | 2486
| | | | | | | | | 1 | 9 | 73 | 585
| | | | | | | | | | 1 | 10
| | | | | | | | | | | 1
| | | | | | | | | | |
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