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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 11 |
| 3 | 83 |
| 4 | 699 |
| 5 | 6252 |
| 6 | 58106 |
| 7 | 554633 |
| 8 | 5399099 |
| 9 | 53356322 |
| 10 | 533627511 |
| 11 | 5388927513 |
| 12 | 54859837434 |
| 13 | 562267554552 |
| 14 | 5796123147756 |
| 15 | 60047675871333 |
| 16 | 624801952898619 |
| 17 | 6526036790730942 |
| 18 | 68395815476047901 |
| 19 | 718992874207884953 |
| 20 | 7578808590187108199 |
[2,11,83,699,6252,58106,554633,5399099,53356322, 533627511,5388927513,54859837434,562267554552, 5796123147756,60047675871333,624801952898619, 6526036790730942,68395815476047901, 718992874207884953,7578808590187108199] |