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| n | a(n) |
|---|---|
| 6 | 1 |
| 7 | 478297 |
| 8 | 257363962948 |
| 9 | 136586400868021924 |
| 10 | 72598678627860564552010 |
| 11 | 38581260992855637306941215162 |
| 12 | 20503702504565185601675453268123604 |
| 13 | 10896505884544222754038383150470776581556 |
[1,478297,257363962948,136586400868021924, 72598678627860564552010, 38581260992855637306941215162, 20503702504565185601675453268123604, 10896505884544222754038383150470776581556] |