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| n | a(n) |
|---|---|
| 1 | 1729 |
| 2 | 294409 |
| 3 | 56052361 |
| 4 | 118901521 |
| 5 | 172947529 |
| 6 | 216821881 |
| 7 | 228842209 |
| 8 | 1299963601 |
| 9 | 2301745249 |
| 10 | 9624742921 |
| 11 | 11346205609 |
| 12 | 13079177569 |
| 13 | 21515221081 |
| 14 | 27278026129 |
| 15 | 65700513721 |
| 16 | 71171308081 |
| 17 | 100264053529 |
| 18 | 168003672409 |
| 19 | 172018713961 |
| 20 | 173032371289 |
| 21 | 464052305161 |
[1729,294409,56052361,118901521,172947529, 216821881,228842209,1299963601,2301745249, 9624742921,11346205609,13079177569,21515221081, 27278026129,65700513721,71171308081,100264053529, 168003672409,172018713961,173032371289, 464052305161] |