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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 474 |
| 3 | 474 |
| 4 | 2741 |
| 5 | 4146 |
| 6 | 2741 |
| 7 | 15948 |
| 8 | 35620 |
| 9 | 35620 |
| 10 | 15948 |
| 11 | 93093 |
| 12 | 308814 |
| 13 | 449258 |
| 14 | 308814 |
| 15 | 93093 |
| 16 | 541880 |
| 17 | 2688928 |
| 18 | 5732688 |
| 19 | 5732688 |
| 20 | 2688928 |
| 21 | 541880 |
| 22 | 3152844 |
| 23 | 23395998 |
| 24 | 74265677 |
| 25 | 109962932 |
| 26 | 74265677 |
| 27 | 23395998 |
| 28 | 3152844 |
| 29 | 18356756 |
[81,474,474,2741,4146,2741,15948,35620,35620, 15948,93093,308814,449258,308814,93093,541880, 2688928,5732688,5732688,2688928,541880,3152844, 23395998,74265677,109962932,74265677,23395998, 3152844,18356756] |