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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 16 |
| 5 | 30 |
| 6 | 54 |
| 7 | 91 |
| 8 | 136 |
| 9 | 198 |
| 10 | 280 |
| 11 | 374 |
| 12 | 492 |
| 13 | 637 |
| 14 | 798 |
| 15 | 990 |
| 16 | 1216 |
| 17 | 1462 |
| 18 | 1746 |
| 19 | 2071 |
| 20 | 2420 |
| 21 | 2814 |
| 22 | 3256 |
| 23 | 3726 |
| 24 | 4248 |
| 25 | 4825 |
| 26 | 5434 |
| 27 | 6102 |
| 28 | 6832 |
| 29 | 7598 |
| 30 | 8430 |
| 31 | 9331 |
| 32 | 10272 |
| 33 | 11286 |
| 34 | 12376 |
| 35 | 13510 |
| 36 | 14724 |
| 37 | 16021 |
| 38 | 17366 |
| 39 | 18798 |
| 40 | 20320 |
| 41 | 21894 |
| 42 | 23562 |
| 43 | 25327 |
| 44 | 27148 |
| 45 | 29070 |
[1,2,6,16,30,54,91,136,198,280,374,492,637,798, 990,1216,1462,1746,2071,2420,2814,3256,3726,4248, 4825,5434,6102,6832,7598,8430,9331,10272,11286, 12376,13510,14724,16021,17366,18798,20320,21894, 23562,25327,27148,29070] |