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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 20 |
| 6 | 34 |
| 7 | 52 |
| 8 | 80 |
| 9 | 116 |
| 10 | 170 |
| 11 | 236 |
| 12 | 333 |
| 13 | 453 |
| 14 | 621 |
| 15 | 825 |
| 16 | 1111 |
| 17 | 1455 |
| 18 | 1923 |
| 19 | 2487 |
| 20 | 3239 |
| 21 | 4149 |
| 22 | 5342 |
| 23 | 6770 |
| 24 | 8625 |
| 25 | 10852 |
| 26 | 13698 |
| 27 | 17107 |
| 28 | 21413 |
| 29 | 26567 |
| 30 | 33019 |
| 31 | 40721 |
| 32 | 50270 |
| 33 | 61663 |
| 34 | 75665 |
| 35 | 92318 |
| 36 | 112686 |
| 37 | 136849 |
| 38 | 166173 |
| 39 | 200923 |
| 40 | 242836 |
[1,3,6,12,20,34,52,80,116,170,236,333,453,621,825, 1111,1455,1923,2487,3239,4149,5342,6770,8625, 10852,13698,17107,21413,26567,33019,40721,50270, 61663,75665,92318,112686,136849,166173,200923, 242836] |