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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 6 |
| 3 | 15 |
| 4 | 35 |
| 5 | 66 |
| 6 | 117 |
| 7 | 170 |
| 8 | 266 |
| 9 | 368 |
| 10 | 522 |
| 11 | 682 |
| 12 | 851 |
| 13 | 1107 |
| 14 | 1376 |
| 15 | 1692 |
| 16 | 2067 |
| 17 | 2478 |
| 18 | 2928 |
| 19 | 3417 |
| 20 | 4047 |
| 21 | 4672 |
| 22 | 5293 |
| 23 | 6059 |
| 24 | 6942 |
| 25 | 7857 |
| 26 | 8787 |
| 27 | 9888 |
| 28 | 11021 |
| 29 | 12208 |
| 30 | 13447 |
| 31 | 14986 |
| 32 | 16375 |
| 33 | 17947 |
| 34 | 19738 |
| 35 | 21456 |
| 36 | 23405 |
| 37 | 25277 |
| 38 | 27547 |
| 39 | 29726 |
| 40 | 32005 |
| 41 | 34368 |
[2,6,15,35,66,117,170,266,368,522,682,851,1107, 1376,1692,2067,2478,2928,3417,4047,4672,5293,6059, 6942,7857,8787,9888,11021,12208,13447,14986,16375, 17947,19738,21456,23405,25277,27547,29726,32005, 34368] |