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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 12 |
| 6 | 20 |
| 7 | 33 |
| 8 | 55 |
| 9 | 92 |
| 10 | 156 |
| 11 | 267 |
| 12 | 466 |
| 13 | 822 |
| 14 | 1473 |
| 15 | 2668 |
| 16 | 4886 |
| 17 | 9021 |
| 18 | 16786 |
| 19 | 31413 |
| 20 | 59101 |
| 21 | 111654 |
| 22 | 211722 |
| 23 | 402697 |
| 24 | 768025 |
| 25 | 1468170 |
| 26 | 2812471 |
| 27 | 5397602 |
| 28 | 10376418 |
| 29 | 19978238 |
| 30 | 38519537 |
| 31 | 74365161 |
| 32 | 143742338 |
| 33 | 278156642 |
| 34 | 538831403 |
| 35 | 1044830113 |
| 36 | 2027879831 |
[1,2,4,7,12,20,33,55,92,156,267,466,822,1473,2668, 4886,9021,16786,31413,59101,111654,211722,402697, 768025,1468170,2812471,5397602,10376418,19978238, 38519537,74365161,143742338,278156642,538831403, 1044830113,2027879831] |