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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 12 |
| 5 | 20 |
| 6 | 33 |
| 7 | 53 |
| 8 | 85 |
| 9 | 133 |
| 10 | 210 |
| 11 | 322 |
| 12 | 505 |
| 13 | 759 |
| 14 | 1192 |
| 15 | 1748 |
| 16 | 2782 |
| 17 | 3931 |
| 18 | 6476 |
| 19 | 8579 |
| 20 | 15216 |
| 21 | 17847 |
| 22 | 36761 |
| 23 | 33612 |
| 24 | 93961 |
| 25 | 47282 |
| 26 | 262987 |
| 27 | -16105 |
| 28 | 827382 |
| 29 | -571524 |
| 30 | 2936705 |
| 31 | -3661626 |
| 32 | 11507775 |
| 33 | -18880652 |
| 34 | 48169220 |
| 35 | -90436605 |
[1,2,4,7,12,20,33,53,85,133,210,322,505,759,1192, 1748,2782,3931,6476,8579,15216,17847,36761,33612, 93961,47282,262987,-16105,827382,-571524,2936705, -3661626,11507775,-18880652,48169220,-90436605] |