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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 10 |
| 5 | 21 |
| 6 | 40 |
| 7 | 79 |
| 8 | 148 |
| 9 | 287 |
| 10 | 538 |
| 11 | 1041 |
| 12 | 1964 |
| 13 | 3811 |
| 14 | 7242 |
| 15 | 14105 |
| 16 | 26974 |
| 17 | 52713 |
| 18 | 101332 |
| 19 | 198571 |
| 20 | 383326 |
| 21 | 752837 |
| 22 | 1458268 |
| 23 | 2869131 |
| 24 | 5573286 |
| 25 | 10981597 |
| 26 | 21382196 |
| 27 | 42183395 |
| 28 | 82299994 |
| 29 | 162533193 |
| 30 | 317650712 |
| 31 | 627885751 |
| 32 | 1228966140 |
| 33 | 2431126919 |
| 34 | 4764733138 |
| 35 | 9431945577 |
[0,1,2,5,10,21,40,79,148,287,538,1041,1964,3811, 7242,14105,26974,52713,101332,198571,383326, 752837,1458268,2869131,5573286,10981597,21382196, 42183395,82299994,162533193,317650712,627885751, 1228966140,2431126919,4764733138,9431945577] |