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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 11 |
| 8 | 20 |
| 9 | 40 |
| 10 | 79 |
| 11 | 147 |
| 12 | 278 |
| 13 | 550 |
| 14 | 1110 |
| 15 | 2204 |
| 16 | 4352 |
| 17 | 8708 |
| 18 | 17689 |
| 19 | 35971 |
| 20 | 72933 |
| 21 | 148271 |
| 22 | 303582 |
| 23 | 624132 |
| 24 | 1283898 |
| 25 | 2643354 |
| 26 | 5458457 |
| 27 | 11306443 |
| 28 | 23460067 |
| 29 | 48727689 |
| 30 | 101363663 |
| 31 | 211262307 |
| 32 | 441026328 |
| 33 | 921743772 |
| 34 | 1928573045 |
| 35 | 4040272335 |
| 36 | 8474803721 |
[1,1,1,1,2,4,7,11,20,40,79,147,278,550,1110,2204, 4352,8708,17689,35971,72933,148271,303582,624132, 1283898,2643354,5458457,11306443,23460067, 48727689,101363663,211262307,441026328,921743772, 1928573045,4040272335,8474803721] |