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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 21 |
| 7 | 38 |
| 8 | 70 |
| 9 | 128 |
| 10 | 236 |
| 11 | 434 |
| 12 | 799 |
| 13 | 1469 |
| 14 | 2702 |
| 15 | 4969 |
| 16 | 9140 |
| 17 | 16811 |
| 18 | 30921 |
| 19 | 56872 |
| 20 | 104604 |
| 21 | 192396 |
| 22 | 353872 |
| 23 | 650872 |
| 24 | 1197141 |
| 25 | 2201885 |
| 26 | 4049898 |
| 27 | 7448923 |
| 28 | 13700706 |
| 29 | 25199527 |
| 30 | 46349157 |
| 31 | 85249390 |
| 32 | 156798074 |
| 33 | 288396620 |
| 34 | 530444084 |
[1,1,2,3,6,11,21,38,70,128,236,434,799,1469,2702, 4969,9140,16811,30921,56872,104604,192396,353872, 650872,1197141,2201885,4049898,7448923,13700706, 25199527,46349157,85249390,156798074,288396620, 530444084] |