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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 9 |
| 3 | 32 |
| 4 | 71 |
| 5 | 145 |
| 6 | 272 |
| 7 | 497 |
| 8 | 879 |
| 9 | 1508 |
| 10 | 2543 |
| 11 | 4233 |
| 12 | 6986 |
| 13 | 11459 |
| 14 | 18717 |
| 15 | 30482 |
| 16 | 49541 |
| 17 | 80403 |
| 18 | 130364 |
| 19 | 211229 |
| 20 | 342099 |
| 21 | 553880 |
| 22 | 896579 |
| 23 | 1451109 |
| 24 | 2348390 |
| 25 | 3800255 |
| 26 | 6149457 |
| 27 | 9950582 |
| 28 | 16100969 |
| 29 | 26052574 |
| 30 | 42154665 |
| 31 | 68208429 |
| 32 | 110364354 |
| 33 | 178574115 |
| 34 | 288939875 |
[2,3,9,32,71,145,272,497,879,1508,2543,4233,6986, 11459,18717,30482,49541,80403,130364,211229, 342099,553880,896579,1451109,2348390,3800255, 6149457,9950582,16100969,26052574,42154665, 68208429,110364354,178574115,288939875] |