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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 49 |
| 3 | 709 |
| 4 | 13505 |
| 5 | 318181 |
| 6 | 8916145 |
| 7 | 289283429 |
| 8 | 10656031489 |
| 9 | 439039941445 |
| 10 | 19995858681521 |
| 11 | 997184081617285 |
| 12 | 54026137182982849 |
| 13 | 3159127731435043109 |
| 14 | 198258247783634075185 |
| 15 | 13289190424904891606821 |
| 16 | 947419111092028780186625 |
[1,5,49,709,13505,318181,8916145,289283429, 10656031489,439039941445,19995858681521, 997184081617285,54026137182982849, 3159127731435043109,198258247783634075185, 13289190424904891606821,947419111092028780186625] |