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| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 5 |
| 8 | 8 |
| 9 | 15 |
| 10 | 23 |
| 11 | 41 |
| 12 | 70 |
| 13 | 126 |
| 14 | 223 |
| 15 | 406 |
| 16 | 740 |
| 17 | 1370 |
| 18 | 2545 |
| 19 | 4769 |
| 20 | 8977 |
| 21 | 16985 |
| 22 | 32261 |
| 23 | 61469 |
| 24 | 117488 |
| 25 | 225060 |
| 26 | 432159 |
| 27 | 831235 |
| 28 | 1601796 |
| 29 | 3090926 |
| 30 | 5973198 |
| 31 | 11556533 |
| 32 | 22385600 |
| 33 | 43405353 |
| 34 | 84247085 |
| 35 | 163661488 |
| 36 | 318209920 |
| 37 | 619181766 |
| 38 | 1205733457 |
| 39 | 2349558582 |
| 40 | 4581555964 |
| 41 | 8939468450 |
| 42 | 17453081143 |
| 43 | 34094082857 |
[0,1,1,2,3,5,8,15,23,41,70,126,223,406,740,1370, 2545,4769,8977,16985,32261,61469,117488,225060, 432159,831235,1601796,3090926,5973198,11556533, 22385600,43405353,84247085,163661488,318209920, 619181766,1205733457,2349558582,4581555964, 8939468450,17453081143,34094082857] |