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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 13 |
| 6 | 139 |
| 7 | 19136 |
| 8 | 366167031 |
| 9 | 134078294225149313 |
| 10 | 17976988982325707481237962186849833 |
| 11 | 323172132870659875927245721269598505772051876540063951439000722587455 |
[1,1,2,3,5,13,139,19136,366167031, 134078294225149313, 17976988982325707481237962186849833, 32317213287065987592724572126959850577205187654006\ 3951439000722587455] |