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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 22 |
| 7 | 39 |
| 8 | 68 |
| 9 | 125 |
| 10 | 227 |
| 11 | 402 |
| 12 | 710 |
| 13 | 1280 |
| 14 | 2281 |
| 15 | 4040 |
| 16 | 7196 |
| 17 | 12780 |
| 18 | 22623 |
| 19 | 40136 |
| 20 | 71121 |
| 21 | 125863 |
| 22 | 222616 |
| 23 | 393305 |
| 24 | 695059 |
| 25 | 1227990 |
| 26 | 2167059 |
| 27 | 3823029 |
| 28 | 6743268 |
| 29 | 11889431 |
| 30 | 20955548 |
| 31 | 36920415 |
| 32 | 65030404 |
| 33 | 114519168 |
| 34 | 201612634 |
| 35 | 354849227 |
[1,1,2,4,6,12,22,39,68,125,227,402,710,1280,2281, 4040,7196,12780,22623,40136,71121,125863,222616, 393305,695059,1227990,2167059,3823029,6743268, 11889431,20955548,36920415,65030404,114519168, 201612634,354849227] |