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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 9 |
| 4 | 12 |
| 5 | 15 |
| 6 | 22 |
| 7 | 35 |
| 8 | 56 |
| 9 | 87 |
| 10 | 134 |
| 11 | 209 |
| 12 | 332 |
| 13 | 533 |
| 14 | 858 |
| 15 | 1381 |
| 16 | 2224 |
| 17 | 3587 |
| 18 | 5794 |
| 19 | 9367 |
| 20 | 15148 |
| 21 | 24499 |
| 22 | 39626 |
| 23 | 64101 |
| 24 | 103704 |
| 25 | 167785 |
| 26 | 271470 |
| 27 | 439233 |
| 28 | 710676 |
| 29 | 1149879 |
| 30 | 1860526 |
| 31 | 3010379 |
| 32 | 4870880 |
| 33 | 7881231 |
| 34 | 12752078 |
| 35 | 20633273 |
| 36 | 33385316 |
| 37 | 54018557 |
| 38 | 87403842 |
| 39 | 141422365 |
| 40 | 228826168 |
[1,6,9,12,15,22,35,56,87,134,209,332,533,858,1381, 2224,3587,5794,9367,15148,24499,39626,64101, 103704,167785,271470,439233,710676,1149879, 1860526,3010379,4870880,7881231,12752078,20633273, 33385316,54018557,87403842,141422365,228826168] |