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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 6 |
| 3 | 25 |
| 4 | 56 |
| 5 | 130 |
| 6 | 250 |
| 7 | 461 |
| 8 | 811 |
| 9 | 1393 |
| 10 | 2348 |
| 11 | 3910 |
| 12 | 6454 |
| 13 | 10589 |
| 14 | 17299 |
| 15 | 28177 |
| 16 | 45800 |
| 17 | 74338 |
| 18 | 120538 |
| 19 | 195317 |
| 20 | 316339 |
| 21 | 512185 |
| 22 | 829100 |
| 23 | 1341961 |
| 24 | 2171790 |
| 25 | 3514535 |
| 26 | 5687166 |
| 27 | 9202601 |
| 28 | 14890728 |
| 29 | 24094353 |
| 30 | 38986170 |
| 31 | 63081679 |
| 32 | 102069074 |
| 33 | 165152049 |
| 34 | 267222492 |
[2,3,6,25,56,130,250,461,811,1393,2348,3910,6454, 10589,17299,28177,45800,74338,120538,195317, 316339,512185,829100,1341961,2171790,3514535, 5687166,9202601,14890728,24094353,38986170, 63081679,102069074,165152049,267222492] |