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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 22 |
| 5 | 40 |
| 6 | 71 |
| 7 | 123 |
| 8 | 212 |
| 9 | 360 |
| 10 | 607 |
| 11 | 1017 |
| 12 | 1693 |
| 13 | 2807 |
| 14 | 4635 |
| 15 | 7629 |
| 16 | 12524 |
| 17 | 20512 |
| 18 | 33532 |
| 19 | 54728 |
| 20 | 89201 |
| 21 | 145223 |
| 22 | 236200 |
| 23 | 383858 |
| 24 | 623393 |
| 25 | 1011813 |
| 26 | 1641441 |
| 27 | 2661767 |
| 28 | 4314821 |
| 29 | 6992417 |
| 30 | 11328796 |
| 31 | 18350552 |
| 32 | 29719248 |
| 33 | 48124026 |
| 34 | 77916923 |
| 35 | 126140917 |
| 36 | 204193454 |
[1,3,6,12,22,40,71,123,212,360,607,1017,1693,2807, 4635,7629,12524,20512,33532,54728,89201,145223, 236200,383858,623393,1011813,1641441,2661767, 4314821,6992417,11328796,18350552,29719248, 48124026,77916923,126140917,204193454] |