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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 9 |
| 5 | 16 |
| 6 | 33 |
| 7 | 67 |
| 8 | 126 |
| 9 | 239 |
| 10 | 477 |
| 11 | 946 |
| 12 | 1809 |
| 13 | 3471 |
| 14 | 6858 |
| 15 | 13515 |
| 16 | 26001 |
| 17 | 50100 |
| 18 | 98577 |
| 19 | 193705 |
| 20 | 373734 |
| 21 | 721691 |
| 22 | 1416933 |
| 23 | 2779780 |
| 24 | 5372001 |
| 25 | 10386841 |
| 26 | 20366802 |
| 27 | 39915887 |
| 28 | 77216409 |
| 29 | 149422384 |
| 30 | 292749633 |
| 31 | 573363693 |
| 32 | 1109898126 |
[1,1,2,5,9,16,33,67,126,239,477,946,1809,3471, 6858,13515,26001,50100,98577,193705,373734,721691, 1416933,2779780,5372001,10386841,20366802, 39915887,77216409,149422384,292749633,573363693, 1109898126] |