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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 21 |
| 3 | 36 |
| 4 | 45 |
| 5 | 55 |
| 6 | 66 |
| 7 | 120 |
| 8 | 210 |
| 9 | 231 |
| 10 | 253 |
| 11 | 406 |
| 12 | 465 |
| 13 | 561 |
| 14 | 630 |
| 15 | 666 |
| 16 | 820 |
| 17 | 990 |
| 18 | 3003 |
| 19 | 3240 |
| 20 | 4095 |
| 21 | 4950 |
| 22 | 5050 |
| 23 | 5151 |
| 24 | 5671 |
| 25 | 5995 |
| 26 | 6670 |
| 27 | 8001 |
| 28 | 20503 |
| 29 | 23653 |
| 30 | 24753 |
| 31 | 29403 |
| 32 | 31125 |
| 33 | 33153 |
| 34 | 37950 |
| 35 | 41041 |
| 36 | 43956 |
| 37 | 54615 |
| 38 | 57630 |
| 39 | 60726 |
| 40 | 63546 |
| 41 | 66066 |
| 42 | 73920 |
[6,21,36,45,55,66,120,210,231,253,406,465,561,630, 666,820,990,3003,3240,4095,4950,5050,5151,5671, 5995,6670,8001,20503,23653,24753,29403,31125, 33153,37950,41041,43956,54615,57630,60726,63546, 66066,73920] |