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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 10 |
| 6 | 18 |
| 7 | 33 |
| 8 | 59 |
| 9 | 105 |
| 10 | 185 |
| 11 | 324 |
| 12 | 564 |
| 13 | 977 |
| 14 | 1685 |
| 15 | 2895 |
| 16 | 4957 |
| 17 | 8462 |
| 18 | 14406 |
| 19 | 24465 |
| 20 | 41455 |
| 21 | 70101 |
| 22 | 118321 |
| 23 | 199368 |
| 24 | 335400 |
| 25 | 563425 |
| 26 | 945193 |
| 27 | 1583643 |
| 28 | 2650229 |
| 29 | 4430290 |
| 30 | 7398330 |
| 31 | 12342849 |
| 32 | 20573219 |
| 33 | 34262337 |
| 34 | 57013865 |
| 35 | 94800780 |
| 36 | 157517532 |
| 37 | 261545777 |
[0,1,1,3,5,10,18,33,59,105,185,324,564,977,1685, 2895,4957,8462,14406,24465,41455,70101,118321, 199368,335400,563425,945193,1583643,2650229, 4430290,7398330,12342849,20573219,34262337, 57013865,94800780,157517532,261545777] |