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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 152 |
| 4 | 4477 |
| 5 | 222222469 |
| 6 | 16851871133 |
| 7 | 3174603192241 |
| 8 | 127791666667432 |
| 9 | 11370371604938421 |
| 10 | 1234444455555556789 |
| 11 | 93041423324151516079 |
| 12 | 8528805556481481481499 |
| 13 | 770180436760683760692223 |
[1,16,152,4477,222222469,16851871133, 3174603192241,127791666667432,11370371604938421, 1234444455555556789,93041423324151516079, 8528805556481481481499,770180436760683760692223] |