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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 5 |
| 4 | 173 |
| 5 | 1979 |
| 6 | 10035601 |
| 7 | 1314434453 |
| 8 | 15043078019 |
| 9 | 75946890143515970461691 |
| 10 | 9947307490759622919990767 |
| 11 | 33651500197152003774080593 |
| 12 | 113842209720657202395344053 |
| 13 | 577291982170349695261586984393 |
| 14 | 33503139717732963900675717496847941 |
[2,2,5,173,1979,10035601,1314434453,15043078019, 75946890143515970461691,9947307490759622919990767, 33651500197152003774080593, 113842209720657202395344053, 577291982170349695261586984393, 33503139717732963900675717496847941] |