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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 15 |
| 7 | 28 |
| 8 | 52 |
| 9 | 97 |
| 10 | 183 |
| 11 | 344 |
| 12 | 647 |
| 13 | 1219 |
| 14 | 2295 |
| 15 | 4322 |
| 16 | 8140 |
| 17 | 15338 |
| 18 | 28899 |
| 19 | 54449 |
| 20 | 102588 |
| 21 | 193297 |
| 22 | 364219 |
| 23 | 686272 |
| 24 | 1293113 |
| 25 | 2436562 |
| 26 | 4591090 |
| 27 | 8650808 |
| 28 | 16300370 |
| 29 | 30714116 |
| 30 | 57873375 |
| 31 | 109048498 |
| 32 | 205475699 |
| 33 | 387169634 |
| 34 | 729528290 |
| 35 | 1374621010 |
| 36 | 2590143467 |
[1,1,1,2,4,8,15,28,52,97,183,344,647,1219,2295, 4322,8140,15338,28899,54449,102588,193297,364219, 686272,1293113,2436562,4591090,8650808,16300370, 30714116,57873375,109048498,205475699,387169634, 729528290,1374621010,2590143467] |