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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 3010 |
| 4 | 365749566870782 |
| 5 | 8630901377559029573671524821295260243701883575513498104067 |
[1,1,5,3010,365749566870782, 86309013775590295736715248212952602437018835755134\ 98104067] |