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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 3 |
| 6 | 5 |
| 7 | 5 |
| 8 | 11 |
| 9 | 25 |
| 10 | 41 |
| 11 | 41 |
| 12 | 80 |
| 13 | 80 |
| 14 | 144 |
| 15 | 284 |
| 16 | 568 |
| 17 | 568 |
| 18 | 1147 |
| 19 | 1147 |
| 20 | 2339 |
| 21 | 4667 |
| 22 | 8763 |
| 23 | 8763 |
| 24 | 17548 |
| 25 | 35196 |
| 26 | 67964 |
| 27 | 135918 |
| 28 | 273806 |
| 29 | 273806 |
| 30 | 548956 |
| 31 | 548956 |
| 32 | 1097974 |
| 33 | 2194294 |
| 34 | 4291446 |
| 35 | 8608698 |
| 36 | 17216783 |
| 37 | 17216783 |
| 38 | 33993999 |
| 39 | 67979983 |
| 40 | 135956742 |
[1,1,1,1,3,3,5,5,11,25,41,41,80,80,144,284,568, 568,1147,1147,2339,4667,8763,8763,17548,35196, 67964,135918,273806,273806,548956,548956,1097974, 2194294,4291446,8608698,17216783,17216783, 33993999,67979983,135956742] |