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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 9 |
| 3 | 1777 |
| 4 | 63435145 |
| 5 | 623666451641641 |
| 6 | 2670266572530016805342641 |
| 7 | 7363629673367015952858629874317363281 |
| 8 | 18165725639381578540715992641519758891553446152650241 |
| 9 | 53130688923813417393347555772148839841537612656804852891837024804533761 |
[1,2,9,1777,63435145,623666451641641, 2670266572530016805342641, 7363629673367015952858629874317363281, 18165725639381578540715992641519758891553446152650\ 241, 53130688923813417393347555772148839841537612656804\ 852891837024804533761] |