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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 12 |
| 5 | 20 |
| 6 | 42 |
| 7 | 74 |
| 8 | 148 |
| 9 | 264 |
| 10 | 506 |
| 11 | 918 |
| 12 | 1730 |
| 13 | 3154 |
| 14 | 5876 |
| 15 | 10760 |
| 16 | 19938 |
| 17 | 36574 |
| 18 | 67536 |
| 19 | 124048 |
| 20 | 228664 |
| 21 | 420248 |
| 22 | 773878 |
| 23 | 1422790 |
| 24 | 2618646 |
| 25 | 4815314 |
| 26 | 8859904 |
| 27 | 16293864 |
| 28 | 29974958 |
| 29 | 55128726 |
| 30 | 101408308 |
| 31 | 186511992 |
| 32 | 343068964 |
| 33 | 630989264 |
| 34 | 1160606794 |
| 35 | 2134665022 |
[1,1,3,5,12,20,42,74,148,264,506,918,1730,3154, 5876,10760,19938,36574,67536,124048,228664,420248, 773878,1422790,2618646,4815314,8859904,16293864, 29974958,55128726,101408308,186511992,343068964, 630989264,1160606794,2134665022] |