| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 34 |
| 5 | 89 |
| 6 | 233 |
| 7 | 610 |
| 8 | 1597 |
| 9 | 4181 |
| 10 | 10946 |
| 11 | 28657 |
| 12 | 75025 |
| 13 | 196418 |
| 14 | 514229 |
| 15 | 1346269 |
| 16 | 3524578 |
| 17 | 9227465 |
| 18 | 24157817 |
| 19 | 63245986 |
| 20 | 165580141 |
| 21 | 433494437 |
| 22 | 1134903170 |
| 23 | 2971215073 |
| 24 | 7778742049 |
| 25 | 20365011074 |
| 26 | 53316291173 |
| 27 | 139583862445 |
| 28 | 365435296162 |
| 29 | 956722026041 |
[1,2,5,13,34,89,233,610,1597,4181,10946,28657, 75025,196418,514229,1346269,3524578,9227465, 24157817,63245986,165580141,433494437,1134903170, 2971215073,7778742049,20365011074,53316291173, 139583862445,365435296162,956722026041] |