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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 17 |
| 5 | 36 |
| 6 | 128 |
| 7 | 320 |
| 8 | 1140 |
| 9 | 3246 |
| 10 | 11434 |
| 11 | 35916 |
| 12 | 125474 |
| 13 | 422089 |
| 14 | 1477804 |
| 15 | 5192274 |
| 16 | 18397703 |
| 17 | 66315629 |
| 18 | 239082564 |
| 19 | 875153486 |
| 20 | 3212013856 |
| 21 | 11889752467 |
| 22 | 44309767139 |
| 23 | 165710641660 |
| 24 | 624879419948 |
| 25 | 2360913501837 |
| 26 | 8983291298866 |
| 27 | 34272210640140 |
| 28 | 131379922642520 |
| 29 | 505553595407305 |
| 30 | 1951228119370848 |
[1,1,3,5,17,36,128,320,1140,3246,11434,35916, 125474,422089,1477804,5192274,18397703,66315629, 239082564,875153486,3212013856,11889752467, 44309767139,165710641660,624879419948, 2360913501837,8983291298866,34272210640140, 131379922642520,505553595407305,1951228119370848] |