A154380 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 2 | | 3 | | 1 |
| | | | | | | | 5 | | 9 | | 5 | | 1 |
| | | | | | | 15 | | 29 | | 20 | | 7 | | 1 |
| | | | | | 52 | | 102 | | 77 | | 35 | | 9 | | 1 |
| | | | | 203 | | 392 | | 302 | | 157 | | 54 | | 11 | | 1 |
| | | | 877 | | 1641 | | 1235 | | 683 | | 277 | | 77 | | 13 | | 1 |
| | | 4140 | | 7451 | | 5324 | | 2987 | | 1329 | | 445 | | 104 | | 15 | | 1 |
| | 21147 | | 36525 | | 24329 | | 13391 | | 6230 | | 2340 | | 669 | | 135 | | 17 | | 1 |
|
A154380 as a square array
1 | 1 | 2 | 5 | 15 | 52 | 203 | 877 | 4140 | 21147
| 1 | 3 | 9 | 29 | 102 | 392 | 1641 | 7451 | 36525
| 1 | 5 | 20 | 77 | 302 | 1235 | 5324 | 24329
| 1 | 7 | 35 | 157 | 683 | 2987 | 13391
| 1 | 9 | 54 | 277 | 1329 | 6230
| 1 | 11 | 77 | 445 | 2340
| 1 | 13 | 104 | 669
| 1 | 15 | 135
| 1 | 17
| 1
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A154380 as an upper right triangle
1 | 1 | 2 | 5 | 15 | 52 | 203 | 877 | 4140 | 21147
| | 1 | 3 | 9 | 29 | 102 | 392 | 1641 | 7451 | 36525
| | | 1 | 5 | 20 | 77 | 302 | 1235 | 5324 | 24329
| | | | 1 | 7 | 35 | 157 | 683 | 2987 | 13391
| | | | | 1 | 9 | 54 | 277 | 1329 | 6230
| | | | | | 1 | 11 | 77 | 445 | 2340
| | | | | | | 1 | 13 | 104 | 669
| | | | | | | | 1 | 15 | 135
| | | | | | | | | 1 | 17
| | | | | | | | | | 1
|
|