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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 14 |
| 6 | 30 |
| 7 | 65 |
| 8 | 132 |
| 9 | 280 |
| 10 | 632 |
| 11 | 1439 |
| 12 | 3299 |
| 13 | 7569 |
| 14 | 17450 |
| 15 | 40313 |
| 16 | 92889 |
| 17 | 212801 |
| 18 | 483590 |
| 19 | 1092649 |
| 20 | 2467078 |
| 21 | 5581232 |
| 22 | 12690828 |
| 23 | 29123728 |
| 24 | 67648617 |
| 25 | 159370347 |
| 26 | 381080620 |
| 27 | 923803158 |
| 28 | 2264970530 |
| 29 | 5599185887 |
| 30 | 13909201590 |
| 31 | 34612152762 |
| 32 | 86049014990 |
[1,1,2,3,7,14,30,65,132,280,632,1439,3299,7569, 17450,40313,92889,212801,483590,1092649,2467078, 5581232,12690828,29123728,67648617,159370347, 381080620,923803158,2264970530,5599185887, 13909201590,34612152762,86049014990] |