The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 5 |
| 2 | 12 |
| 3 | 24 |
| 4 | 47 |
| 5 | 84 |
| 6 | 148 |
| 7 | 251 |
| 8 | 422 |
| 9 | 702 |
| 10 | 1155 |
| 11 | 1894 |
| 12 | 3090 |
| 13 | 5027 |
| 14 | 8164 |
| 15 | 13244 |
| 16 | 21467 |
| 17 | 34772 |
| 18 | 56306 |
| 19 | 91149 |
| 20 | 147528 |
| 21 | 238756 |
| 22 | 386367 |
| 23 | 625212 |
| 24 | 1011676 |
| 25 | 1636989 |
| 26 | 2648768 |
| 27 | 4285864 |
| 28 | 6934741 |
| 29 | 11220718 |
| 30 | 18155586 |
| 31 | 29376435 |
| 32 | 47532158 |
| 33 | 76908732 |
| 34 | 124441039 |
| 35 | 201349922 |
[2,5,12,24,47,84,148,251,422,702,1155,1894,3090, 5027,8164,13244,21467,34772,56306,91149,147528, 238756,386367,625212,1011676,1636989,2648768, 4285864,6934741,11220718,18155586,29376435, 47532158,76908732,124441039,201349922] |