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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 21 |
| 4 | 36 |
| 5 | 85 |
| 6 | 120 |
| 7 | 217 |
| 8 | 280 |
| 9 | 441 |
| 10 | 540 |
| 11 | 781 |
| 12 | 924 |
| 13 | 1261 |
| 14 | 1456 |
| 15 | 1905 |
| 16 | 2160 |
| 17 | 2737 |
| 18 | 3060 |
| 19 | 3781 |
| 20 | 4180 |
| 21 | 5061 |
| 22 | 5544 |
| 23 | 6601 |
| 24 | 7176 |
| 25 | 8425 |
| 26 | 9100 |
| 27 | 10557 |
| 28 | 11340 |
| 29 | 13021 |
| 30 | 13920 |
| 31 | 15841 |
| 32 | 16864 |
| 33 | 19041 |
| 34 | 20196 |
| 35 | 22645 |
| 36 | 23940 |
| 37 | 26677 |
| 38 | 28120 |
| 39 | 31161 |
| 40 | 32760 |
| 41 | 36121 |
| 42 | 37884 |
| 43 | 41581 |
[1,4,21,36,85,120,217,280,441,540,781,924,1261, 1456,1905,2160,2737,3060,3781,4180,5061,5544,6601, 7176,8425,9100,10557,11340,13021,13920,15841, 16864,19041,20196,22645,23940,26677,28120,31161, 32760,36121,37884,41581] |