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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 11 |
| 3 | 209 |
| 4 | 778615 |
| 5 | 3961986619787 |
| 6 | 108027609649678328362291208 |
| 7 | 12797763868538691769539594849146740548395979750179143 |
| 8 | 2398705889323117848234063941075093304477004809996203196876904292203062137833411276780250923333345577605421 |
[0,1,11,209,778615,3961986619787, 108027609649678328362291208, 12797763868538691769539594849146740548395979750179\ 143, 23987058893231178482340639410750933044770048099962\ 03196876904292203062137833411276780250923333345577\ 605421] |