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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 8 |
| 4 | 15 |
| 5 | 21 |
| 6 | 32 |
| 7 | 40 |
| 8 | 55 |
| 9 | 72 |
| 10 | 84 |
| 11 | 105 |
| 12 | 128 |
| 13 | 144 |
| 14 | 171 |
| 15 | 189 |
| 16 | 220 |
| 17 | 253 |
| 18 | 275 |
| 19 | 312 |
| 20 | 336 |
| 21 | 377 |
| 22 | 420 |
| 23 | 448 |
| 24 | 495 |
| 25 | 544 |
| 26 | 576 |
| 27 | 629 |
| 28 | 663 |
| 29 | 720 |
| 30 | 779 |
| 31 | 817 |
| 32 | 880 |
| 33 | 945 |
| 34 | 987 |
| 35 | 1056 |
| 36 | 1100 |
| 37 | 1173 |
| 38 | 1248 |
| 39 | 1296 |
| 40 | 1375 |
| 41 | 1425 |
| 42 | 1508 |
| 43 | 1593 |
| 44 | 1647 |
| 45 | 1736 |
| 46 | 1827 |
| 47 | 1885 |
| 48 | 1980 |
| 49 | 2040 |
| 50 | 2139 |
| 51 | 2240 |
[1,3,8,15,21,32,40,55,72,84,105,128,144,171,189, 220,253,275,312,336,377,420,448,495,544,576,629, 663,720,779,817,880,945,987,1056,1100,1173,1248, 1296,1375,1425,1508,1593,1647,1736,1827,1885,1980, 2040,2139,2240] |