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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 14 |
| 5 | 31 |
| 6 | 56 |
| 7 | 104 |
| 8 | 208 |
| 9 | 418 |
| 10 | 873 |
| 11 | 1772 |
| 12 | 3545 |
| 13 | 7103 |
| 14 | 14180 |
| 15 | 28572 |
| 16 | 57620 |
| 17 | 116055 |
| 18 | 233735 |
| 19 | 469754 |
| 20 | 944670 |
| 21 | 1900425 |
| 22 | 3823544 |
| 23 | 7695342 |
| 24 | 15483113 |
| 25 | 31150656 |
| 26 | 62671350 |
| 27 | 126083545 |
| 28 | 253679744 |
| 29 | 510398235 |
| 30 | 1026910104 |
| 31 | 2066113688 |
| 32 | 4156885969 |
[1,2,6,14,31,56,104,208,418,873,1772,3545,7103, 14180,28572,57620,116055,233735,469754,944670, 1900425,3823544,7695342,15483113,31150656, 62671350,126083545,253679744,510398235,1026910104, 2066113688,4156885969] |