| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 10 |
| 4 | 21 |
| 5 | 38 |
| 6 | 72 |
| 7 | 124 |
| 8 | 218 |
| 9 | 363 |
| 10 | 607 |
| 11 | 977 |
| 12 | 1580 |
| 13 | 2479 |
| 14 | 3889 |
| 15 | 5976 |
| 16 | 9162 |
| 17 | 13812 |
| 18 | 20771 |
| 19 | 30811 |
| 20 | 45561 |
| 21 | 66638 |
| 22 | 97117 |
| 23 | 140237 |
| 24 | 201811 |
| 25 | 288119 |
| 26 | 409904 |
| 27 | 579240 |
| 28 | 815715 |
| 29 | 1141916 |
| 30 | 1593318 |
| 31 | 2211453 |
| 32 | 3059662 |
| 33 | 4213395 |
| 34 | 5784458 |
| 35 | 7907783 |
| 36 | 10779202 |
| 37 | 14636771 |
| 38 | 19819770 |
[1,2,5,10,21,38,72,124,218,363,607,977,1580,2479, 3889,5976,9162,13812,20771,30811,45561,66638, 97117,140237,201811,288119,409904,579240,815715, 1141916,1593318,2211453,3059662,4213395,5784458, 7907783,10779202,14636771,19819770] |