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| n | a(n) |
|---|---|
| 4 | 0 |
| 5 | 1 |
| 6 | 3 |
| 7 | 9 |
| 8 | 21 |
| 9 | 46 |
| 10 | 92 |
| 11 | 180 |
| 12 | 330 |
| 13 | 595 |
| 14 | 1039 |
| 15 | 1793 |
| 16 | 3023 |
| 17 | 5030 |
| 18 | 8248 |
| 19 | 13388 |
| 20 | 21518 |
| 21 | 34231 |
| 22 | 54079 |
| 23 | 84607 |
| 24 | 131603 |
| 25 | 203050 |
| 26 | 311738 |
| 27 | 474974 |
| 28 | 720666 |
| 29 | 1086125 |
| 30 | 1629815 |
| 31 | 2431647 |
| 32 | 3612665 |
| 33 | 5339710 |
| 34 | 7860366 |
| 35 | 11519856 |
| 36 | 16816312 |
| 37 | 24448029 |
| 38 | 35409609 |
[0,1,3,9,21,46,92,180,330,595,1039,1793,3023,5030, 8248,13388,21518,34231,54079,84607,131603,203050, 311738,474974,720666,1086125,1629815,2431647, 3612665,5339710,7860366,11519856,16816312, 24448029,35409609] |