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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 4 |
| 6 | 6 |
| 7 | 4 |
| 8 | 17 |
| 9 | 32 |
| 10 | 44 |
| 11 | 60 |
| 12 | 70 |
| 13 | 184 |
| 14 | 476 |
| 15 | 872 |
| 16 | 1553 |
| 17 | 2720 |
| 18 | 4288 |
| 19 | 6312 |
| 20 | 9004 |
| 21 | 16088 |
| 22 | 36900 |
| 23 | 82984 |
| 24 | 174374 |
| 25 | 346048 |
| 26 | 653096 |
| 27 | 1199384 |
| 28 | 2160732 |
| 29 | 3812464 |
| 30 | 6617304 |
| 31 | 11307920 |
| 32 | 18978577 |
| 33 | 31327104 |
| 34 | 51931296 |
| 35 | 90400704 |
| 36 | 170054336 |
| 37 | 341729616 |
| 38 | 711634072 |
| 39 | 1491256624 |
[1,1,2,1,4,6,4,17,32,44,60,70,184,476,872,1553, 2720,4288,6312,9004,16088,36900,82984,174374, 346048,653096,1199384,2160732,3812464,6617304, 11307920,18978577,31327104,51931296,90400704, 170054336,341729616,711634072,1491256624] |