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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 2 |
| 7 | 5 |
| 8 | 7 |
| 9 | 8 |
| 10 | 14 |
| 11 | 24 |
| 12 | 34 |
| 13 | 49 |
| 14 | 79 |
| 15 | 123 |
| 16 | 182 |
| 17 | 276 |
| 18 | 429 |
| 19 | 655 |
| 20 | 990 |
| 21 | 1513 |
| 22 | 2321 |
| 23 | 3537 |
| 24 | 5385 |
| 25 | 8229 |
| 26 | 12574 |
| 27 | 19175 |
| 28 | 29252 |
| 29 | 44670 |
| 30 | 68190 |
| 31 | 104043 |
| 32 | 158790 |
| 33 | 242398 |
| 34 | 369961 |
| 35 | 564604 |
| 36 | 861749 |
| 37 | 1315318 |
| 38 | 2007485 |
| 39 | 3063877 |
| 40 | 4676340 |
| 41 | 7137394 |
| 42 | 10893438 |
[1,0,0,1,2,1,2,5,7,8,14,24,34,49,79,123,182,276, 429,655,990,1513,2321,3537,5385,8229,12574,19175, 29252,44670,68190,104043,158790,242398,369961, 564604,861749,1315318,2007485,3063877,4676340, 7137394,10893438] |