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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 17 |
| 6 | 31 |
| 7 | 56 |
| 8 | 101 |
| 9 | 183 |
| 10 | 332 |
| 11 | 602 |
| 12 | 1091 |
| 13 | 1977 |
| 14 | 3583 |
| 15 | 6494 |
| 16 | 11770 |
| 17 | 21332 |
| 18 | 38662 |
| 19 | 70071 |
| 20 | 126997 |
| 21 | 230170 |
| 22 | 417161 |
| 23 | 756064 |
| 24 | 1370293 |
| 25 | 2483524 |
| 26 | 4501148 |
| 27 | 8157897 |
| 28 | 14785402 |
| 29 | 26797116 |
| 30 | 48567190 |
| 31 | 88023351 |
[1,2,3,5,9,17,31,56,101,183,332,602,1091,1977, 3583,6494,11770,21332,38662,70071,126997,230170, 417161,756064,1370293,2483524,4501148,8157897, 14785402,26797116,48567190,88023351] |