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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 25 |
| 5 | 55 |
| 6 | 110 |
| 7 | 207 |
| 8 | 373 |
| 9 | 652 |
| 10 | 1115 |
| 11 | 1877 |
| 12 | 3124 |
| 13 | 5157 |
| 14 | 8463 |
| 15 | 13830 |
| 16 | 22533 |
| 17 | 36635 |
| 18 | 59474 |
| 19 | 96451 |
| 20 | 156305 |
| 21 | 253176 |
| 22 | 409943 |
| 23 | 663625 |
| 24 | 1074120 |
| 25 | 1738345 |
| 26 | 2813115 |
| 27 | 4552162 |
| 28 | 7366033 |
| 29 | 11919007 |
| 30 | 19285910 |
| 31 | 31205847 |
| 32 | 50492749 |
| 33 | 81699652 |
[0,1,3,10,25,55,110,207,373,652,1115,1877,3124, 5157,8463,13830,22533,36635,59474,96451,156305, 253176,409943,663625,1074120,1738345,2813115, 4552162,7366033,11919007,19285910,31205847, 50492749,81699652] |