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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 7 |
| 6 | 18 |
| 7 | 21 |
| 8 | 35 |
| 9 | 63 |
| 10 | 105 |
| 11 | 111 |
| 12 | 159 |
| 13 | 217 |
| 14 | 1183 |
| 15 | 1330 |
| 16 | 1353 |
| 17 | 1449 |
| 18 | 2023 |
| 19 | 7223 |
| 20 | 8707 |
| 21 | 10787 |
| 22 | 13881 |
| 23 | 58135 |
| 24 | 1126478 |
| 25 | 1135315 |
| 26 | 1141795 |
| 27 | 1938643 |
| 28 | 5867454 |
| 29 | 9251270 |
[1,2,4,6,7,18,21,35,63,105,111,159,217,1183,1330, 1353,1449,2023,7223,8707,10787,13881,58135, 1126478,1135315,1141795,1938643,5867454,9251270] |