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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 129 |
| 3 | 8133 |
| 4 | 949281 |
| 5 | 177127653 |
| 6 | 48290752353 |
| 7 | 18102997908453 |
| 8 | 8931245615625921 |
| 9 | 5609823664317348165 |
| 10 | 4370983985597526359745 |
| 11 | 4137308650120582099800453 |
| 12 | 4676183786000402886175691745 |
[1,5,129,8133,949281,177127653,48290752353, 18102997908453,8931245615625921, 5609823664317348165,4370983985597526359745, 4137308650120582099800453, 4676183786000402886175691745] |