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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 9 |
| 5 | 16 |
| 6 | 102 |
| 7 | 130 |
| 8 | 800 |
| 9 | 1889 |
| 10 | 11089 |
| 11 | 17598 |
| 12 | 179255 |
| 13 | 233448 |
| 14 | 1865925 |
| 15 | 5603767 |
| 16 | 22468480 |
| 17 | 44744046 |
| 18 | 477260541 |
| 19 | 636308684 |
| 20 | 5732446015 |
| 21 | 15272176563 |
| 22 | 73301037291 |
| 23 | 133274359128 |
| 24 | 1466413083360 |
[1,1,3,9,16,102,130,800,1889,11089,17598,179255, 233448,1865925,5603767,22468480,44744046, 477260541,636308684,5732446015,15272176563, 73301037291,133274359128,1466413083360] |