| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 6 |
| 7 | 12 |
| 8 | 18 |
| 9 | 32 |
| 10 | 50 |
| 11 | 88 |
| 12 | 134 |
| 13 | 232 |
| 14 | 364 |
| 15 | 604 |
| 16 | 966 |
| 17 | 1596 |
| 18 | 2544 |
| 19 | 4180 |
| 20 | 6708 |
| 21 | 10932 |
| 22 | 17622 |
| 23 | 28656 |
| 24 | 46206 |
| 25 | 75020 |
| 26 | 121160 |
| 27 | 196384 |
| 28 | 317432 |
| 29 | 514228 |
| 30 | 831374 |
| 31 | 1346268 |
| 32 | 2177322 |
| 33 | 3524488 |
| 34 | 5701290 |
| 35 | 9227448 |
| 36 | 14927632 |
| 37 | 24157816 |
| 38 | 39083988 |
[1,0,1,2,4,6,12,18,32,50,88,134,232,364,604,966, 1596,2544,4180,6708,10932,17622,28656,46206,75020, 121160,196384,317432,514228,831374,1346268, 2177322,3524488,5701290,9227448,14927632,24157816, 39083988] |