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| n | a(n) |
|---|---|
| 1 | 28 |
| 2 | 351 |
| 3 | 1891 |
| 4 | 4851 |
| 5 | 7381 |
| 6 | 9453 |
| 7 | 15931 |
| 8 | 26565 |
| 9 | 31125 |
| 10 | 68635 |
| 11 | 90951 |
| 12 | 110685 |
| 13 | 130305 |
| 14 | 140185 |
| 15 | 218791 |
| 16 | 224785 |
| 17 | 240471 |
| 18 | 243253 |
| 19 | 309291 |
| 20 | 341551 |
| 21 | 466095 |
| 22 | 497503 |
| 23 | 780625 |
| 24 | 889111 |
| 25 | 899811 |
| 26 | 1122751 |
| 27 | 1188111 |
| 28 | 1214461 |
| 29 | 1269621 |
| 30 | 1334161 |
| 31 | 1408681 |
| 32 | 1595791 |
[28,351,1891,4851,7381,9453,15931,26565,31125, 68635,90951,110685,130305,140185,218791,224785, 240471,243253,309291,341551,466095,497503,780625, 889111,899811,1122751,1188111,1214461,1269621, 1334161,1408681,1595791] |