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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 21 |
| 3 | 40 |
| 4 | 105 |
| 5 | 126 |
| 6 | 301 |
| 7 | 456 |
| 8 | 657 |
| 9 | 910 |
| 10 | 1221 |
| 11 | 1596 |
| 12 | 2041 |
| 13 | 2562 |
| 14 | 3165 |
| 15 | 3856 |
| 16 | 4641 |
| 17 | 5526 |
| 18 | 6517 |
| 19 | 7620 |
| 20 | 8841 |
| 21 | 10186 |
| 22 | 11661 |
| 23 | 13272 |
| 24 | 15025 |
| 25 | 16926 |
| 26 | 18981 |
| 27 | 21196 |
| 28 | 23577 |
| 29 | 26130 |
| 30 | 28861 |
| 31 | 31776 |
| 32 | 34881 |
| 33 | 38182 |
| 34 | 41685 |
| 35 | 45396 |
| 36 | 49321 |
| 37 | 53466 |
| 38 | 57837 |
| 39 | 62440 |
| 40 | 67281 |
| 41 | 72366 |
| 42 | 77701 |
[6,21,40,105,126,301,456,657,910,1221,1596,2041, 2562,3165,3856,4641,5526,6517,7620,8841,10186, 11661,13272,15025,16926,18981,21196,23577,26130, 28861,31776,34881,38182,41685,45396,49321,53466, 57837,62440,67281,72366,77701] |