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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 21 |
| 3 | 31 |
| 4 | 42 |
| 5 | 52 |
| 6 | 73 |
| 7 | 81 |
| 8 | 319 |
| 9 | 391 |
| 10 | 463 |
| 11 | 583 |
| 12 | 2911 |
| 13 | 3667 |
| 14 | 6451 |
| 15 | 8793 |
| 16 | 9927 |
| 17 | 237126 |
| 18 | 254158 |
| 19 | 278393 |
| 20 | 2561363 |
| 21 | 9398143 |
| 22 | 9431623 |
| 23 | 9951265 |
| 24 | 83543869 |
| 25 | 83896381 |
| 26 | 83935261 |
| 27 | 2843233127 |
| 28 | 2847297383 |
| 29 | 2853748583 |
| 30 | 2885762663 |
| 31 | 266998137657 |
| 32 | 685718563667 |
| 33 | 688373877587 |
[0,1,21,31,42,52,73,81,319,391,463,583,2911,3667, 6451,8793,9927,237126,254158,278393,2561363, 9398143,9431623,9951265,83543869,83896381, 83935261,2843233127,2847297383,2853748583, 2885762663,266998137657,685718563667,688373877587] |