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| n | a(n) |
|---|---|
| 1 | 23 |
| 2 | 4201 |
| 3 | 102658511 |
| 4 | 344800741 |
| 5 | 39715342481 |
| 6 | 70496383033 |
| 7 | 869910021839 |
| 8 | 998699567381 |
| 9 | 3457914828521 |
| 10 | 3487946075153 |
| 11 | 5265190686031 |
| 12 | 5786421085169 |
| 13 | 7020715917491 |
| 14 | 9432574158041 |
| 15 | 9925883645611 |
| 16 | 9987727089187 |
| 17 | 23802566907811 |
| 18 | 23888027348153 |
| 19 | 34401855516071 |
[23,4201,102658511,344800741,39715342481, 70496383033,869910021839,998699567381, 3457914828521,3487946075153,5265190686031, 5786421085169,7020715917491,9432574158041, 9925883645611,9987727089187,23802566907811, 23888027348153,34401855516071] |