| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 17 |
| 6 | 36 |
| 7 | 78 |
| 8 | 171 |
| 9 | 379 |
| 10 | 848 |
| 11 | 1912 |
| 12 | 4341 |
| 13 | 9915 |
| 14 | 22767 |
| 15 | 52526 |
| 16 | 121698 |
| 17 | 283043 |
| 18 | 660579 |
| 19 | 1546556 |
| 20 | 3631261 |
| 21 | 8548643 |
| 22 | 20174093 |
| 23 | 47716388 |
| 24 | 113095740 |
| 25 | 268575321 |
| 26 | 638954183 |
| 27 | 1522668500 |
| 28 | 3634346039 |
| 29 | 8687404327 |
| 30 | 20794957839 |
| 31 | 49841956726 |
| 32 | 119610395745 |
[1,1,2,4,8,17,36,78,171,379,848,1912,4341,9915, 22767,52526,121698,283043,660579,1546556,3631261, 8548643,20174093,47716388,113095740,268575321, 638954183,1522668500,3634346039,8687404327, 20794957839,49841956726,119610395745] |