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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 10 |
| 4 | 20 |
| 5 | 41 |
| 6 | 85 |
| 7 | 160 |
| 8 | 292 |
| 9 | 532 |
| 10 | 952 |
| 11 | 1624 |
| 12 | 2779 |
| 13 | 4597 |
| 14 | 7567 |
| 15 | 12319 |
| 16 | 19711 |
| 17 | 30997 |
| 18 | 48707 |
| 19 | 75167 |
| 20 | 115295 |
| 21 | 175487 |
| 22 | 264665 |
| 23 | 395185 |
| 24 | 587335 |
| 25 | 865371 |
| 26 | 1267311 |
| 27 | 1845231 |
| 28 | 2670627 |
| 29 | 3839267 |
| 30 | 5498051 |
| 31 | 7824331 |
| 32 | 11080441 |
| 33 | 15624505 |
| 34 | 21927225 |
| 35 | 30633780 |
| 36 | 42642416 |
[1,2,4,10,20,41,85,160,292,532,952,1624,2779,4597, 7567,12319,19711,30997,48707,75167,115295,175487, 264665,395185,587335,865371,1267311,1845231, 2670627,3839267,5498051,7824331,11080441,15624505, 21927225,30633780,42642416] |