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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 9 |
| 6 | 14 |
| 7 | 20 |
| 8 | 30 |
| 9 | 45 |
| 10 | 69 |
| 11 | 104 |
| 12 | 165 |
| 13 | 255 |
| 14 | 405 |
| 15 | 642 |
| 16 | 1029 |
| 17 | 1640 |
| 18 | 2645 |
| 19 | 4243 |
| 20 | 6852 |
| 21 | 11040 |
| 22 | 17840 |
| 23 | 28787 |
| 24 | 46567 |
| 25 | 75227 |
| 26 | 121685 |
| 27 | 196725 |
| 28 | 318269 |
| 29 | 514688 |
| 30 | 832760 |
| 31 | 1346990 |
| 32 | 2179417 |
| 33 | 3525722 |
| 34 | 5704642 |
| 35 | 9229228 |
| 36 | 14933176 |
| 37 | 24160642 |
| 38 | 39092592 |
[1,2,4,6,9,14,20,30,45,69,104,165,255,405,642, 1029,1640,2645,4243,6852,11040,17840,28787,46567, 75227,121685,196725,318269,514688,832760,1346990, 2179417,3525722,5704642,9229228,14933176,24160642, 39092592] |