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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 31 |
| 8 | 62 |
| 9 | 120 |
| 10 | 236 |
| 11 | 454 |
| 12 | 884 |
| 13 | 1697 |
| 14 | 3275 |
| 15 | 6266 |
| 16 | 12020 |
| 17 | 22935 |
| 18 | 43788 |
| 19 | 83325 |
| 20 | 158516 |
| 21 | 300914 |
| 22 | 570794 |
| 23 | 1081157 |
| 24 | 2045934 |
| 25 | 3867617 |
| 26 | 7304149 |
| 27 | 13783221 |
| 28 | 25984936 |
| 29 | 48956715 |
| 30 | 92155376 |
| 31 | 173376484 |
| 32 | 325919786 |
| 33 | 612378787 |
| 34 | 1149777034 |
[1,1,2,4,8,16,31,62,120,236,454,884,1697,3275, 6266,12020,22935,43788,83325,158516,300914,570794, 1081157,2045934,3867617,7304149,13783221,25984936, 48956715,92155376,173376484,325919786,612378787, 1149777034] |