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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 15 |
| 6 | 22 |
| 7 | 30 |
| 8 | 39 |
| 9 | 50 |
| 10 | 63 |
| 11 | 80 |
| 12 | 99 |
| 13 | 122 |
| 14 | 147 |
| 15 | 174 |
| 16 | 203 |
| 17 | 234 |
| 18 | 266 |
| 19 | 303 |
| 20 | 344 |
| 21 | 387 |
| 22 | 434 |
| 23 | 483 |
| 24 | 536 |
| 25 | 595 |
| 26 | 656 |
| 27 | 723 |
| 28 | 794 |
| 29 | 867 |
| 30 | 946 |
| 31 | 1029 |
| 32 | 1118 |
| 33 | 1215 |
| 34 | 1316 |
| 35 | 1419 |
| 36 | 1526 |
| 37 | 1635 |
| 38 | 1748 |
| 39 | 1869 |
| 40 | 1994 |
| 41 | 2121 |
| 42 | 2252 |
| 43 | 2389 |
| 44 | 2528 |
| 45 | 2677 |
| 46 | 2828 |
| 47 | 2985 |
| 48 | 3148 |
| 49 | 3315 |
| 50 | 3484 |
| 51 | 3657 |
[1,3,6,10,15,22,30,39,50,63,80,99,122,147,174,203, 234,266,303,344,387,434,483,536,595,656,723,794, 867,946,1029,1118,1215,1316,1419,1526,1635,1748, 1869,1994,2121,2252,2389,2528,2677,2828,2985,3148, 3315,3484,3657] |