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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 68 |
| 3 | 365 |
| 4 | 2019 |
| 5 | 11328 |
| 6 | 63321 |
| 7 | 353483 |
| 8 | 1974124 |
| 9 | 11026373 |
| 10 | 61584323 |
| 11 | 343956104 |
| 12 | 1921047729 |
| 13 | 10729356747 |
| 14 | 59925127764 |
| 15 | 334691142941 |
| 16 | 1869302113507 |
| 17 | 10440343236752 |
| 18 | 58310941508105 |
| 19 | 325675681470731 |
| 20 | 1818949357172988 |
| 21 | 10159115194159989 |
| 22 | 56740239146359107 |
[1,11,68,365,2019,11328,63321,353483,1974124, 11026373,61584323,343956104,1921047729, 10729356747,59925127764,334691142941, 1869302113507,10440343236752,58310941508105, 325675681470731,1818949357172988, 10159115194159989,56740239146359107] |