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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 5 |
| 10 | 8 |
| 11 | 14 |
| 12 | 23 |
| 13 | 40 |
| 14 | 70 |
| 15 | 126 |
| 16 | 221 |
| 17 | 394 |
| 18 | 711 |
| 19 | 1290 |
| 20 | 2354 |
| 21 | 4344 |
| 22 | 8015 |
| 23 | 14868 |
| 24 | 27585 |
| 25 | 51094 |
| 26 | 95160 |
| 27 | 178436 |
| 28 | 335645 |
| 29 | 634568 |
| 30 | 1202236 |
| 31 | 2261052 |
| 32 | 4267640 |
| 33 | 8067296 |
| 34 | 15318171 |
| 35 | 29031484 |
| 36 | 55248527 |
| 37 | 105251904 |
| 38 | 200711160 |
| 39 | 383580180 |
| 40 | 733704990 |
[1,1,1,1,1,1,2,2,4,5,8,14,23,40,70,126,221,394, 711,1290,2354,4344,8015,14868,27585,51094,95160, 178436,335645,634568,1202236,2261052,4267640, 8067296,15318171,29031484,55248527,105251904, 200711160,383580180,733704990] |