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| n | a(n) |
|---|---|
| 1 | -3 |
| 2 | -4 |
| 3 | -4 |
| 4 | -4 |
| 5 | -2 |
| 6 | 2 |
| 7 | 9 |
| 8 | 20 |
| 9 | 40 |
| 10 | 73 |
| 11 | 127 |
| 12 | 215 |
| 13 | 358 |
| 14 | 590 |
| 15 | 965 |
| 16 | 1574 |
| 17 | 2560 |
| 18 | 4156 |
| 19 | 6739 |
| 20 | 10919 |
| 21 | 17683 |
| 22 | 28628 |
| 23 | 46338 |
| 24 | 74994 |
| 25 | 121361 |
| 26 | 196385 |
| 27 | 317776 |
| 28 | 514193 |
| 29 | 832003 |
| 30 | 1346231 |
| 31 | 2178270 |
| 32 | 3524538 |
| 33 | 5702846 |
| 34 | 9227423 |
[-3,-4,-4,-4,-2,2,9,20,40,73,127,215,358,590,965, 1574,2560,4156,6739,10919,17683,28628,46338,74994, 121361,196385,317776,514193,832003,1346231, 2178270,3524538,5702846,9227423] |