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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 512 |
| 3 | 2943 |
| 4 | 10624 |
| 5 | 29375 |
| 6 | 68256 |
| 7 | 140287 |
| 8 | 263168 |
| 9 | 459999 |
| 10 | 760000 |
| 11 | 1199231 |
| 12 | 1821312 |
| 13 | 2678143 |
| 14 | 3830624 |
| 15 | 5349375 |
| 16 | 7315456 |
| 17 | 9821087 |
| 18 | 12970368 |
| 19 | 16879999 |
| 20 | 21680000 |
| 21 | 27514431 |
| 22 | 34542112 |
| 23 | 42937343 |
| 24 | 52890624 |
| 25 | 64609375 |
| 26 | 78318656 |
| 27 | 94261887 |
| 28 | 112701568 |
| 29 | 133919999 |
[31,512,2943,10624,29375,68256,140287,263168, 459999,760000,1199231,1821312,2678143,3830624, 5349375,7315456,9821087,12970368,16879999, 21680000,27514431,34542112,42937343,52890624, 64609375,78318656,94261887,112701568,133919999] |