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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 15 |
| 6 | 28 |
| 7 | 55 |
| 8 | 66 |
| 9 | 105 |
| 10 | 120 |
| 11 | 136 |
| 12 | 171 |
| 13 | 231 |
| 14 | 325 |
| 15 | 406 |
| 16 | 465 |
| 17 | 561 |
| 18 | 820 |
| 19 | 1081 |
| 20 | 1770 |
| 21 | 2016 |
| 22 | 2145 |
| 23 | 2211 |
| 24 | 3160 |
| 25 | 3321 |
| 26 | 5778 |
| 27 | 7750 |
| 28 | 11026 |
| 29 | 13041 |
| 30 | 13695 |
| 31 | 15400 |
| 32 | 17020 |
| 33 | 23220 |
| 34 | 34716 |
| 35 | 41616 |
| 36 | 55945 |
| 37 | 60031 |
| 38 | 70876 |
| 39 | 75078 |
| 40 | 100576 |
| 41 | 106953 |
| 42 | 126756 |
| 43 | 196251 |
| 44 | 260281 |
| 45 | 263175 |
| 46 | 374545 |
[1,3,6,10,15,28,55,66,105,120,136,171,231,325,406, 465,561,820,1081,1770,2016,2145,2211,3160,3321, 5778,7750,11026,13041,13695,15400,17020,23220, 34716,41616,55945,60031,70876,75078,100576,106953, 126756,196251,260281,263175,374545] |