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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 30 |
| 7 | 58 |
| 8 | 111 |
| 9 | 210 |
| 10 | 396 |
| 11 | 750 |
| 12 | 1420 |
| 13 | 2688 |
| 14 | 5079 |
| 15 | 9586 |
| 16 | 18092 |
| 17 | 34157 |
| 18 | 64516 |
| 19 | 121899 |
| 20 | 230373 |
| 21 | 435463 |
| 22 | 823379 |
| 23 | 1557421 |
| 24 | 2946938 |
| 25 | 5578111 |
| 26 | 10561990 |
| 27 | 20005129 |
| 28 | 37902514 |
| 29 | 71832373 |
| 30 | 136173273 |
| 31 | 258211603 |
| 32 | 489738627 |
| 33 | 929074448 |
| 34 | 1762899110 |
| 35 | 3345713034 |
[1,1,2,4,8,16,30,58,111,210,396,750,1420,2688, 5079,9586,18092,34157,64516,121899,230373,435463, 823379,1557421,2946938,5578111,10561990,20005129, 37902514,71832373,136173273,258211603,489738627, 929074448,1762899110,3345713034] |