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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 13 |
| 3 | 16081 |
| 4 | 5552351121 |
| 5 | 1050740615666453461 |
| 6 | 179349571255187154941191217629 |
| 7 | 41020870889694863957061607086939138327565057 |
| 8 | 17469051230066445323872793284679234619523576313653708533767425 |
[1,1,13,16081,5552351121,1050740615666453461, 179349571255187154941191217629, 41020870889694863957061607086939138327565057, 17469051230066445323872793284679234619523576313653\ 708533767425] |