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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 13 |
| 4 | 29 |
| 5 | 59 |
| 6 | 113 |
| 7 | 207 |
| 8 | 363 |
| 9 | 623 |
| 10 | 1047 |
| 11 | 1745 |
| 12 | 2881 |
| 13 | 4725 |
| 14 | 7721 |
| 15 | 12571 |
| 16 | 20425 |
| 17 | 33143 |
| 18 | 53733 |
| 19 | 87055 |
| 20 | 140977 |
| 21 | 228237 |
| 22 | 369429 |
| 23 | 597891 |
| 24 | 967561 |
| 25 | 1565707 |
| 26 | 2533543 |
| 27 | 4099545 |
| 28 | 6633393 |
[1,5,13,29,59,113,207,363,623,1047,1745,2881,4725, 7721,12571,20425,33143,53733,87055,140977,228237, 369429,597891,967561,1565707,2533543,4099545, 6633393] |