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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 7 |
| 5 | 10 |
| 6 | 13 |
| 7 | 39 |
| 8 | 45 |
| 9 | 65 |
| 10 | 131 |
| 11 | 195 |
| 12 | 1690 |
| 13 | 2005 |
| 14 | 2106 |
| 15 | 3211 |
| 16 | 11615 |
| 17 | 18498 |
| 18 | 20881 |
| 19 | 22360 |
| 20 | 36335 |
| 21 | 104858 |
| 22 | 234506 |
| 23 | 665223 |
| 24 | 1274944 |
| 25 | 1328487 |
| 26 | 1425268 |
| 27 | 2305498 |
[1,2,6,7,10,13,39,45,65,131,195,1690,2005,2106, 3211,11615,18498,20881,22360,36335,104858,234506, 665223,1274944,1328487,1425268,2305498] |