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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 668 |
| 3 | 8426 |
| 4 | 152180 |
| 5 | 2462572 |
| 6 | 36885538 |
| 7 | 586971925 |
| 8 | 9394148948 |
| 9 | 147360195020 |
| 10 | 2323912599668 |
| 11 | 36828163940937 |
| 12 | 581946068219980 |
| 13 | 9192142912146333 |
| 14 | 145366991149880099 |
| 15 | 2298573739864122981 |
| 16 | 36336196551594686076 |
[16,668,8426,152180,2462572,36885538,586971925, 9394148948,147360195020,2323912599668, 36828163940937,581946068219980,9192142912146333, 145366991149880099,2298573739864122981, 36336196551594686076] |