The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 17 |
| 6 | 31 |
| 7 | 54 |
| 8 | 97 |
| 9 | 172 |
| 10 | 306 |
| 11 | 542 |
| 12 | 961 |
| 13 | 1704 |
| 14 | 3020 |
| 15 | 5353 |
| 16 | 9488 |
| 17 | 16817 |
| 18 | 29809 |
| 19 | 52835 |
| 20 | 93648 |
| 21 | 165986 |
| 22 | 294204 |
| 23 | 521463 |
| 24 | 924269 |
| 25 | 1638224 |
| 26 | 2903677 |
| 27 | 5146633 |
| 28 | 9122171 |
| 29 | 16168627 |
| 30 | 28658145 |
| 31 | 50795241 |
| 32 | 90032220 |
| 33 | 159577956 |
| 34 | 282844563 |
| 35 | 501328935 |
| 36 | 888582403 |
[1,1,3,5,9,17,31,54,97,172,306,542,961,1704,3020, 5353,9488,16817,29809,52835,93648,165986,294204, 521463,924269,1638224,2903677,5146633,9122171, 16168627,28658145,50795241,90032220,159577956, 282844563,501328935,888582403] |