The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 8 |
| 5 | 12 |
| 6 | 19 |
| 7 | 31 |
| 8 | 48 |
| 9 | 79 |
| 10 | 126 |
| 11 | 200 |
| 12 | 322 |
| 13 | 513 |
| 14 | 823 |
| 15 | 1318 |
| 16 | 2105 |
| 17 | 3372 |
| 18 | 5394 |
| 19 | 8632 |
| 20 | 13817 |
| 21 | 22103 |
| 22 | 35374 |
| 23 | 56607 |
| 24 | 90580 |
| 25 | 144956 |
| 26 | 231952 |
| 27 | 371177 |
| 28 | 593973 |
| 29 | 950478 |
| 30 | 1520987 |
| 31 | 2433908 |
| 32 | 3894788 |
| 33 | 6232544 |
| 34 | 9973435 |
| 35 | 15959719 |
| 36 | 25539092 |
| 37 | 40868195 |
[2,3,4,8,12,19,31,48,79,126,200,322,513,823,1318, 2105,3372,5394,8632,13817,22103,35374,56607,90580, 144956,231952,371177,593973,950478,1520987, 2433908,3894788,6232544,9973435,15959719,25539092, 40868195] |