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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 9 |
| 8 | 14 |
| 9 | 21 |
| 10 | 32 |
| 11 | 49 |
| 12 | 75 |
| 13 | 115 |
| 14 | 177 |
| 15 | 272 |
| 16 | 418 |
| 17 | 642 |
| 18 | 987 |
| 19 | 1517 |
| 20 | 2331 |
| 21 | 3583 |
| 22 | 5507 |
| 23 | 8464 |
| 24 | 13009 |
| 25 | 19994 |
| 26 | 30730 |
| 27 | 47231 |
| 28 | 72593 |
| 29 | 111573 |
| 30 | 171485 |
| 31 | 263568 |
| 32 | 405097 |
| 33 | 622623 |
| 34 | 956955 |
| 35 | 1470815 |
| 36 | 2260604 |
| 37 | 3474489 |
| 38 | 5340198 |
| 39 | 8207744 |
| 40 | 12615087 |
| 41 | 19389058 |
[1,1,1,2,3,4,6,9,14,21,32,49,75,115,177,272,418, 642,987,1517,2331,3583,5507,8464,13009,19994, 30730,47231,72593,111573,171485,263568,405097, 622623,956955,1470815,2260604,3474489,5340198, 8207744,12615087,19389058] |