The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 10 |
| 3 | 20 |
| 4 | 38 |
| 5 | 67 |
| 6 | 115 |
| 7 | 193 |
| 8 | 321 |
| 9 | 528 |
| 10 | 864 |
| 11 | 1408 |
| 12 | 2289 |
| 13 | 3715 |
| 14 | 6023 |
| 15 | 9758 |
| 16 | 15802 |
| 17 | 25583 |
| 18 | 41409 |
| 19 | 67017 |
| 20 | 108452 |
| 21 | 175496 |
| 22 | 283976 |
| 23 | 459501 |
| 24 | 743507 |
| 25 | 1203039 |
| 26 | 1946578 |
| 27 | 3149650 |
| 28 | 5096262 |
| 29 | 8245947 |
| 30 | 13342245 |
| 31 | 21588229 |
| 32 | 34930512 |
| 33 | 56518780 |
| 34 | 91449333 |
| 35 | 147968155 |
[1,3,10,20,38,67,115,193,321,528,864,1408,2289, 3715,6023,9758,15802,25583,41409,67017,108452, 175496,283976,459501,743507,1203039,1946578, 3149650,5096262,8245947,13342245,21588229, 34930512,56518780,91449333,147968155] |