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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 192 |
| 9 | 354 |
| 10 | 654 |
| 11 | 1212 |
| 12 | 2256 |
| 13 | 4222 |
| 14 | 7944 |
| 15 | 15028 |
| 16 | 28576 |
| 17 | 54594 |
| 18 | 104746 |
| 19 | 201726 |
| 20 | 389766 |
| 21 | 755210 |
| 22 | 1466812 |
| 23 | 2854758 |
| 24 | 5565712 |
| 25 | 10867222 |
| 26 | 21245758 |
| 27 | 41582248 |
| 28 | 81464040 |
| 29 | 159734210 |
| 30 | 313447612 |
| 31 | 615510416 |
| 32 | 1209437392 |
| 33 | 2377866638 |
[1,2,4,8,16,30,56,104,192,354,654,1212,2256,4222, 7944,15028,28576,54594,104746,201726,389766, 755210,1466812,2854758,5565712,10867222,21245758, 41582248,81464040,159734210,313447612,615510416, 1209437392,2377866638] |