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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 33 |
| 4 | 369 |
| 5 | 3741 |
| 6 | 38714 |
| 7 | 395621 |
| 8 | 4007705 |
| 9 | 40484195 |
| 10 | 408035120 |
| 11 | 4105718243 |
| 12 | 41266320918 |
| 13 | 414416274953 |
| 14 | 4159068898063 |
[0,2,33,369,3741,38714,395621,4007705,40484195, 408035120,4105718243,41266320918,414416274953, 4159068898063] |