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| n | a(n) |
|---|---|
| 0 | -1 |
| 1 | 4 |
| 2 | 21 |
| 3 | 50 |
| 4 | 91 |
| 5 | 144 |
| 6 | 209 |
| 7 | 286 |
| 8 | 375 |
| 9 | 476 |
| 10 | 589 |
| 11 | 714 |
| 12 | 851 |
| 13 | 1000 |
| 14 | 1161 |
| 15 | 1334 |
| 16 | 1519 |
| 17 | 1716 |
| 18 | 1925 |
| 19 | 2146 |
| 20 | 2379 |
| 21 | 2624 |
| 22 | 2881 |
| 23 | 3150 |
| 24 | 3431 |
| 25 | 3724 |
| 26 | 4029 |
| 27 | 4346 |
| 28 | 4675 |
| 29 | 5016 |
| 30 | 5369 |
| 31 | 5734 |
| 32 | 6111 |
| 33 | 6500 |
| 34 | 6901 |
| 35 | 7314 |
| 36 | 7739 |
| 37 | 8176 |
| 38 | 8625 |
| 39 | 9086 |
| 40 | 9559 |
| 41 | 10044 |
| 42 | 10541 |
| 43 | 11050 |
| 44 | 11571 |
[-1,4,21,50,91,144,209,286,375,476,589,714,851, 1000,1161,1334,1519,1716,1925,2146,2379,2624,2881, 3150,3431,3724,4029,4346,4675,5016,5369,5734,6111, 6500,6901,7314,7739,8176,8625,9086,9559,10044, 10541,11050,11571] |