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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 9 |
| 4 | 9 |
| 5 | 9 |
| 6 | 105 |
| 7 | 137 |
| 8 | 105 |
| 9 | 777 |
| 10 | 1385 |
| 11 | 9 |
| 12 | 4457 |
| 13 | 7177 |
| 14 | 5993 |
| 15 | 33801 |
| 16 | 62825 |
| 17 | 49161 |
| 18 | 292713 |
| 19 | 410633 |
| 20 | 218473 |
| 21 | 3670025 |
| 22 | 7108457 |
| 23 | 8864777 |
| 24 | 16012649 |
| 25 | 13041673 |
| 26 | 74741609 |
| 27 | 121848841 |
| 28 | 74995049 |
| 29 | 611254281 |
| 30 | 906786665 |
| 31 | 48448521 |
| 32 | 5246571881 |
| 33 | 7015956489 |
| 34 | 462190441 |
[1,1,1,9,9,9,105,137,105,777,1385,9,4457,7177, 5993,33801,62825,49161,292713,410633,218473, 3670025,7108457,8864777,16012649,13041673, 74741609,121848841,74995049,611254281,906786665, 48448521,5246571881,7015956489,462190441] |