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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 15 |
| 3 | 16 |
| 4 | 751 |
| 5 | 767 |
| 6 | 11489 |
| 7 | 12256 |
| 8 | 575265 |
| 9 | 587521 |
| 10 | 8800559 |
| 11 | 9388080 |
| 12 | 440652239 |
| 13 | 450040319 |
| 14 | 6741216705 |
| 15 | 7191257024 |
| 16 | 337539039809 |
| 17 | 344730296833 |
| 18 | 5163763195471 |
| 19 | 5508493492304 |
| 20 | 258554463841455 |
| 21 | 264062957333759 |
| 22 | 3955435866514081 |
| 23 | 4219498823847840 |
[1,1,15,16,751,767,11489,12256,575265,587521, 8800559,9388080,440652239,450040319,6741216705, 7191257024,337539039809,344730296833, 5163763195471,5508493492304,258554463841455, 264062957333759,3955435866514081,4219498823847840] |