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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 10 |
| 5 | 18 |
| 6 | 24 |
| 7 | 32 |
| 8 | 60 |
| 9 | 71 |
| 10 | 100 |
| 11 | 512 |
| 12 | 2990 |
| 13 | 9910 |
| 14 | 10031 |
| 15 | 12618 |
| 16 | 32674 |
| 17 | 53586 |
| 18 | 153878 |
| 19 | 223500 |
| 20 | 312608 |
| 21 | 369119 |
| 22 | 386110 |
| 23 | 466569 |
| 24 | 4491817 |
| 25 | 7068356 |
| 26 | 8765871 |
| 27 | 65311881 |
[1,2,5,10,18,24,32,60,71,100,512,2990,9910,10031, 12618,32674,53586,153878,223500,312608,369119, 386110,466569,4491817,7068356,8765871,65311881] |