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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 8 |
| 5 | 14 |
| 6 | 22 |
| 7 | 40 |
| 8 | 71 |
| 9 | 126 |
| 10 | 224 |
| 11 | 397 |
| 12 | 721 |
| 13 | 1318 |
| 14 | 2431 |
| 15 | 4531 |
| 16 | 8493 |
| 17 | 15999 |
| 18 | 30234 |
| 19 | 57281 |
| 20 | 108744 |
| 21 | 206868 |
| 22 | 394293 |
| 23 | 752985 |
| 24 | 1440705 |
| 25 | 2761606 |
| 26 | 5302954 |
| 27 | 10200322 |
| 28 | 19652438 |
| 29 | 37921447 |
| 30 | 73277740 |
| 31 | 141783308 |
| 32 | 274656312 |
| 33 | 532615214 |
| 34 | 1033834916 |
| 35 | 2008466475 |
| 36 | 3905027107 |
[0,1,3,5,8,14,22,40,71,126,224,397,721,1318,2431, 4531,8493,15999,30234,57281,108744,206868,394293, 752985,1440705,2761606,5302954,10200322,19652438, 37921447,73277740,141783308,274656312,532615214, 1033834916,2008466475,3905027107] |