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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 7 |
| 7 | 12 |
| 8 | 19 |
| 9 | 32 |
| 10 | 53 |
| 11 | 94 |
| 12 | 158 |
| 13 | 279 |
| 14 | 480 |
| 15 | 847 |
| 16 | 1487 |
| 17 | 2647 |
| 18 | 4676 |
| 19 | 8349 |
| 20 | 14865 |
| 21 | 26630 |
| 22 | 47700 |
| 23 | 85778 |
| 24 | 154290 |
| 25 | 278318 |
| 26 | 502437 |
| 27 | 908880 |
| 28 | 1645713 |
| 29 | 2984546 |
| 30 | 5417743 |
| 31 | 9847189 |
| 32 | 17914494 |
| 33 | 32625523 |
| 34 | 59467893 |
| 35 | 108493134 |
| 36 | 198089610 |
| 37 | 361965238 |
| 38 | 661883231 |
| 39 | 1211161991 |
[1,1,2,3,5,7,12,19,32,53,94,158,279,480,847,1487, 2647,4676,8349,14865,26630,47700,85778,154290, 278318,502437,908880,1645713,2984546,5417743, 9847189,17914494,32625523,59467893,108493134, 198089610,361965238,661883231,1211161991] |