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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 9 |
| 5 | 12 |
| 6 | 14 |
| 7 | 26 |
| 8 | 33 |
| 9 | 44 |
| 10 | 54 |
| 11 | 126 |
| 12 | 141 |
| 13 | 830 |
| 14 | 2436 |
| 15 | 3534 |
| 16 | 3846 |
| 17 | 4152 |
| 18 | 4460 |
| 19 | 4974 |
| 20 | 13160 |
| 21 | 13200 |
| 22 | 13832 |
| 23 | 21996 |
| 24 | 28065 |
[1,2,6,9,12,14,26,33,44,54,126,141,830,2436,3534, 3846,4152,4460,4974,13160,13200,13832,21996,28065] |