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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 6 |
| 6 | 12 |
| 7 | 16 |
| 8 | 39 |
| 9 | 84 |
| 10 | 156 |
| 11 | 350 |
| 12 | 358 |
| 13 | 589 |
| 14 | 984 |
| 15 | 2030 |
| 16 | 2682 |
| 17 | 3312 |
| 18 | 4364 |
| 19 | 19152 |
| 20 | 61320 |
| 21 | 61632 |
| 22 | 142066 |
| 23 | 353998 |
| 24 | 702794 |
| 25 | 1063044 |
| 26 | 2056526 |
| 27 | 2866334 |
| 28 | 5479152 |
| 29 | 8751462 |
| 30 | 43544486 |
[1,2,4,5,6,12,16,39,84,156,350,358,589,984,2030, 2682,3312,4364,19152,61320,61632,142066,353998, 702794,1063044,2056526,2866334,5479152,8751462, 43544486] |