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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 3 |
| 8 | 5 |
| 9 | 6 |
| 10 | 9 |
| 11 | 14 |
| 12 | 21 |
| 13 | 32 |
| 14 | 54 |
| 15 | 87 |
| 16 | 144 |
| 17 | 230 |
| 18 | 383 |
| 19 | 671 |
| 20 | 1158 |
| 21 | 1981 |
| 22 | 3408 |
| 23 | 6246 |
| 24 | 10925 |
| 25 | 19463 |
| 26 | 34624 |
| 27 | 63941 |
| 28 | 114954 |
| 29 | 208429 |
| 30 | 380130 |
| 31 | 707194 |
| 32 | 1298600 |
| 33 | 2379842 |
| 34 | 4398644 |
| 35 | 8253618 |
| 36 | 15303057 |
| 37 | 28453809 |
| 38 | 53091455 |
| 39 | 100061278 |
| 40 | 187446097 |
[1,1,1,1,1,2,2,3,5,6,9,14,21,32,54,87,144,230,383, 671,1158,1981,3408,6246,10925,19463,34624,63941, 114954,208429,380130,707194,1298600,2379842, 4398644,8253618,15303057,28453809,53091455, 100061278,187446097] |