| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 2 |
| 4 | 1 |
| 5 | 3 |
| 6 | 6 |
| 7 | 10 |
| 8 | 15 |
| 9 | 30 |
| 10 | 54 |
| 11 | 92 |
| 12 | 160 |
| 13 | 282 |
| 14 | 492 |
| 15 | 859 |
| 16 | 1490 |
| 17 | 2570 |
| 18 | 4428 |
| 19 | 7627 |
| 20 | 13098 |
| 21 | 22421 |
| 22 | 38290 |
| 23 | 65265 |
| 24 | 111018 |
| 25 | 188475 |
| 26 | 319380 |
| 27 | 540266 |
| 28 | 912397 |
| 29 | 1538371 |
| 30 | 2589858 |
| 31 | 4353820 |
| 32 | 7309362 |
| 33 | 12255474 |
| 34 | 20523307 |
| 35 | 34328731 |
| 36 | 57357184 |
| 37 | 95733131 |
| 38 | 159626049 |
[1,0,2,1,3,6,10,15,30,54,92,160,282,492,859,1490, 2570,4428,7627,13098,22421,38290,65265,111018, 188475,319380,540266,912397,1538371,2589858, 4353820,7309362,12255474,20523307,34328731, 57357184,95733131,159626049] |