The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 9 |
| 6 | 15 |
| 7 | 27 |
| 8 | 45 |
| 9 | 77 |
| 10 | 127 |
| 11 | 213 |
| 12 | 349 |
| 13 | 577 |
| 14 | 941 |
| 15 | 1545 |
| 16 | 2513 |
| 17 | 4103 |
| 18 | 6661 |
| 19 | 10841 |
| 20 | 17579 |
| 21 | 28547 |
| 22 | 46253 |
| 23 | 75013 |
| 24 | 121479 |
| 25 | 196841 |
| 26 | 318669 |
| 27 | 516087 |
| 28 | 835333 |
| 29 | 1352361 |
| 30 | 2188635 |
| 31 | 3542541 |
| 32 | 5732721 |
| 33 | 9277775 |
| 34 | 15013009 |
| 35 | 24294887 |
| 36 | 39311999 |
| 37 | 63613547 |
| 38 | 102932207 |
[1,1,1,3,5,9,15,27,45,77,127,213,349,577,941,1545, 2513,4103,6661,10841,17579,28547,46253,75013, 121479,196841,318669,516087,835333,1352361, 2188635,3542541,5732721,9277775,15013009,24294887, 39311999,63613547,102932207] |