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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 5 |
| 6 | 11 |
| 7 | 16 |
| 8 | 36 |
| 9 | 65 |
| 10 | 150 |
| 11 | 312 |
| 12 | 756 |
| 13 | 1743 |
| 14 | 4353 |
| 15 | 10732 |
| 16 | 27489 |
| 17 | 70379 |
| 18 | 183866 |
| 19 | 481952 |
| 20 | 1277784 |
| 21 | 3402661 |
| 22 | 9126689 |
| 23 | 24584870 |
| 24 | 66567924 |
| 25 | 180939737 |
| 26 | 493801694 |
| 27 | 1352203202 |
| 28 | 3715137460 |
| 29 | 10237545525 |
| 30 | 28291018283 |
| 31 | 78384998904 |
| 32 | 217715672036 |
| 33 | 606103034821 |
| 34 | 1691020991782 |
| 35 | 4727601528674 |
| 36 | 13242641322252 |
| 37 | 37162431389051 |
| 38 | 104469244613429 |
[1,1,2,2,4,5,11,16,36,65,150,312,756,1743,4353, 10732,27489,70379,183866,481952,1277784,3402661, 9126689,24584870,66567924,180939737,493801694, 1352203202,3715137460,10237545525,28291018283, 78384998904,217715672036,606103034821, 1691020991782,4727601528674,13242641322252, 37162431389051,104469244613429] |