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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 76 |
| 3 | 622 |
| 4 | 33740 |
| 5 | 561271 |
| 6 | 2740779 |
| 7 | 96745050 |
| 8 | 1042095316 |
| 9 | 3442865393 |
| 10 | 88529711419 |
| 11 | 713489134252 |
| 12 | 1807746313421 |
| 13 | 37066136105268 |
| 14 | 241902857874013 |
| 15 | 503427752952568 |
| 16 | 8681256219590301 |
| 17 | 48116992979572975 |
| 18 | 85825473881325409 |
[3,76,622,33740,561271,2740779,96745050, 1042095316,3442865393,88529711419,713489134252, 1807746313421,37066136105268,241902857874013, 503427752952568,8681256219590301, 48116992979572975,85825473881325409] |