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| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 31 |
| 3 | 52 |
| 4 | 73 |
| 5 | 115 |
| 6 | 138 |
| 7 | 1713 |
| 8 | 1921 |
| 9 | 2334 |
| 10 | 2955 |
| 11 | 3189 |
| 12 | 37144 |
| 13 | 41233 |
| 14 | 43377 |
| 15 | 47610 |
| 16 | 53987 |
| 17 | 591597 |
| 18 | 612584 |
| 19 | 674181 |
| 20 | 716765 |
| 21 | 7310946 |
| 22 | 7917711 |
| 23 | 8328657 |
| 24 | 8946368 |
| 25 | 9775025 |
| 26 | 101121393 |
| 27 | 103196418 |
| 28 | 107317811 |
| 29 | 109514229 |
| 30 | 113832040 |
| 31 | 1271346269 |
[21,31,52,73,115,138,1713,1921,2334,2955,3189, 37144,41233,43377,47610,53987,591597,612584, 674181,716765,7310946,7917711,8328657,8946368, 9775025,101121393,103196418,107317811,109514229, 113832040,1271346269] |