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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 27 |
| 6 | 61 |
| 7 | 132 |
| 8 | 285 |
| 9 | 590 |
| 10 | 1190 |
| 11 | 2325 |
| 12 | 4441 |
| 13 | 8288 |
| 14 | 15197 |
| 15 | 27394 |
| 16 | 48679 |
| 17 | 85332 |
| 18 | 147790 |
| 19 | 253016 |
| 20 | 428602 |
| 21 | 718696 |
| 22 | 1193779 |
| 23 | 1964996 |
| 24 | 3206966 |
| 25 | 5191350 |
| 26 | 8339001 |
| 27 | 13296592 |
| 28 | 21053380 |
| 29 | 33112242 |
| 30 | 51746168 |
| 31 | 80372146 |
| 32 | 124104612 |
| 33 | 190557592 |
[1,3,6,13,27,61,132,285,590,1190,2325,4441,8288, 15197,27394,48679,85332,147790,253016,428602, 718696,1193779,1964996,3206966,5191350,8339001, 13296592,21053380,33112242,51746168,80372146, 124104612,190557592] |