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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 19 |
| 7 | 34 |
| 8 | 62 |
| 9 | 117 |
| 10 | 207 |
| 11 | 407 |
| 12 | 704 |
| 13 | 1430 |
| 14 | 2431 |
| 15 | 5070 |
| 16 | 8502 |
| 17 | 18122 |
| 18 | 30056 |
| 19 | 65246 |
| 20 | 107236 |
| 21 | 236436 |
| 22 | 385662 |
| 23 | 861764 |
| 24 | 1396652 |
| 25 | 3157325 |
| 26 | 5088865 |
| 27 | 11622015 |
| 28 | 18642420 |
| 29 | 42961470 |
| 30 | 68624295 |
| 31 | 159419670 |
| 32 | 253706790 |
| 33 | 593636670 |
| 34 | 941630580 |
[1,1,2,3,6,10,19,34,62,117,207,407,704,1430,2431, 5070,8502,18122,30056,65246,107236,236436,385662, 861764,1396652,3157325,5088865,11622015,18642420, 42961470,68624295,159419670,253706790,593636670, 941630580] |