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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 21 |
| 3 | 49 |
| 4 | 105 |
| 5 | 1729 |
| 6 | 2465 |
| 7 | 2877 |
| 8 | 7305 |
| 9 | 10585 |
| 10 | 15841 |
| 11 | 31021 |
| 12 | 31621 |
| 13 | 32041 |
| 14 | 41041 |
| 15 | 46657 |
| 16 | 52633 |
| 17 | 54145 |
| 18 | 75361 |
| 19 | 83333 |
| 20 | 115921 |
| 21 | 126217 |
| 22 | 162401 |
| 23 | 172081 |
| 24 | 211141 |
| 25 | 282133 |
| 26 | 284649 |
| 27 | 294409 |
| 28 | 334153 |
| 29 | 383161 |
| 30 | 399001 |
| 31 | 417241 |
| 32 | 449065 |
| 33 | 488881 |
| 34 | 530881 |
[1,21,49,105,1729,2465,2877,7305,10585,15841, 31021,31621,32041,41041,46657,52633,54145,75361, 83333,115921,126217,162401,172081,211141,282133, 284649,294409,334153,383161,399001,417241,449065, 488881,530881] |