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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 12 |
| 8 | 24 |
| 9 | 50 |
| 10 | 107 |
| 11 | 232 |
| 12 | 508 |
| 13 | 1124 |
| 14 | 2513 |
| 15 | 5665 |
| 16 | 12858 |
| 17 | 29356 |
| 18 | 67371 |
| 19 | 155345 |
| 20 | 359733 |
| 21 | 836261 |
| 22 | 1950829 |
| 23 | 4565305 |
| 24 | 10714501 |
| 25 | 25212843 |
| 26 | 59474318 |
| 27 | 140609809 |
| 28 | 333126672 |
| 29 | 790764280 |
| 30 | 1880489541 |
| 31 | 4479494059 |
| 32 | 10687448937 |
| 33 | 25536624382 |
| 34 | 61102431113 |
[0,1,1,1,2,3,6,12,24,50,107,232,508,1124,2513, 5665,12858,29356,67371,155345,359733,836261, 1950829,4565305,10714501,25212843,59474318, 140609809,333126672,790764280,1880489541, 4479494059,10687448937,25536624382,61102431113] |